Home / 1,091,442.60-1,640,663.10-778,069.80

Finding the Fourth Proportional to 1,091,442.60, 1,640,663.10 and 778,069.80

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Solution

The fourth proportional to 1,091,442.60, 1,640,663.10 and 778,069.80 is: 1,169,599.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,442.60 : 1,640,663.10 = 778,069.80 : x
  2. Step 2: Convert to fraction form
    1,091,442.60/1,640,663.10 = 778,069.80/x
  3. Step 3: Cross multiply
    1,091,442.60x = 1,640,663.10 × 778,069.80
  4. Step 4: Simplify right side
    1,091,442.60x = 1,276,550,410,084.38
  5. Step 5: Solve for x
    x = 1,276,550,410,084.38/1,091,442.60
  6. Step 6: Final answer
    x = 1,169,599.22

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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.