Home / 1,123,298,020.80-1,684,947,031.20-1,091,012,980.05

Finding the Fourth Proportional to 1,123,298,020.80, 1,684,947,031.20 and 1,091,012,980.05

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Solution

The fourth proportional to 1,123,298,020.80, 1,684,947,031.20 and 1,091,012,980.05 is: 1,636,519,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,298,020.80 : 1,684,947,031.20 = 1,091,012,980.05 : x
  2. Step 2: Convert to fraction form
    1,123,298,020.80/1,684,947,031.20 = 1,091,012,980.05/x
  3. Step 3: Cross multiply
    1,123,298,020.80x = 1,684,947,031.20 × 1,091,012,980.05
  4. Step 4: Simplify right side
    1,123,298,020.80x = 1,838,299,081,735,912,192
  5. Step 5: Solve for x
    x = 1,838,299,081,735,912,192/1,123,298,020.80
  6. Step 6: Final answer
    x = 1,636,519,470.08

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Half scale
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Double scale
Find fourth proportional to 1,123,298,021.80, 1,684,947,032.70 and 1,091,012,981.05
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.