Home / 717,491,747.40-990,138,605.58-387,466,857.24

Finding the Fourth Proportional to 717,491,747.40, 990,138,605.58 and 387,466,857.24

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Solution

The fourth proportional to 717,491,747.40, 990,138,605.58 and 387,466,857.24 is: 534,704,259.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,491,747.40 : 990,138,605.58 = 387,466,857.24 : x
  2. Step 2: Convert to fraction form
    717,491,747.40/990,138,605.58 = 387,466,857.24/x
  3. Step 3: Cross multiply
    717,491,747.40x = 990,138,605.58 × 387,466,857.24
  4. Step 4: Simplify right side
    717,491,747.40x = 383,645,893,736,078,528
  5. Step 5: Solve for x
    x = 383,645,893,736,078,528/717,491,747.40
  6. Step 6: Final answer
    x = 534,704,259.84

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.