Home / 1,054,260,071.20-1,581,390,106.80-782,162,279.20

Finding the Fourth Proportional to 1,054,260,071.20, 1,581,390,106.80 and 782,162,279.20

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Solution

The fourth proportional to 1,054,260,071.20, 1,581,390,106.80 and 782,162,279.20 is: 1,173,243,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054,260,071.20 : 1,581,390,106.80 = 782,162,279.20 : x
  2. Step 2: Convert to fraction form
    1,054,260,071.20/1,581,390,106.80 = 782,162,279.20/x
  3. Step 3: Cross multiply
    1,054,260,071.20x = 1,581,390,106.80 × 782,162,279.20
  4. Step 4: Simplify right side
    1,054,260,071.20x = 1,236,903,690,239,019,520
  5. Step 5: Solve for x
    x = 1,236,903,690,239,019,520/1,054,260,071.20
  6. Step 6: Final answer
    x = 1,173,243,418.80

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Half scale
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Double scale
Find fourth proportional to 1,054,260,072.20, 1,581,390,108.30 and 782,162,280.20
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.