Home / 717,697,631.25-990,423,129.65-387,672,773.49

Finding the Fourth Proportional to 717,697,631.25, 990,423,129.65 and 387,672,773.49

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Solution

The fourth proportional to 717,697,631.25, 990,423,129.65 and 387,672,773.49 is: 534,988,642.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,697,631.25 : 990,423,129.65 = 387,672,773.49 : x
  2. Step 2: Convert to fraction form
    717,697,631.25/990,423,129.65 = 387,672,773.49/x
  3. Step 3: Cross multiply
    717,697,631.25x = 990,423,129.65 × 387,672,773.49
  4. Step 4: Simplify right side
    717,697,631.25x = 383,960,081,598,123,008
  5. Step 5: Solve for x
    x = 383,960,081,598,123,008/717,697,631.25
  6. Step 6: Final answer
    x = 534,988,642.68

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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.