Home / 717,697,617.52-990,423,110.72-387,672,759.76

Finding the Fourth Proportional to 717,697,617.52, 990,423,110.72 and 387,672,759.76

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Solution

The fourth proportional to 717,697,617.52, 990,423,110.72 and 387,672,759.76 is: 534,988,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,697,617.52 : 990,423,110.72 = 387,672,759.76 : x
  2. Step 2: Convert to fraction form
    717,697,617.52/990,423,110.72 = 387,672,759.76/x
  3. Step 3: Cross multiply
    717,697,617.52x = 990,423,110.72 × 387,672,759.76
  4. Step 4: Simplify right side
    717,697,617.52x = 383,960,060,662,906,432
  5. Step 5: Solve for x
    x = 383,960,060,662,906,432/717,697,617.52
  6. Step 6: Final answer
    x = 534,988,623.75

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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.