Home / 664,469,320.80-996,703,981.20-392,371,528.80

Finding the Fourth Proportional to 664,469,320.80, 996,703,981.20 and 392,371,528.80

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Solution

The fourth proportional to 664,469,320.80, 996,703,981.20 and 392,371,528.80 is: 588,557,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,469,320.80 : 996,703,981.20 = 392,371,528.80 : x
  2. Step 2: Convert to fraction form
    664,469,320.80/996,703,981.20 = 392,371,528.80/x
  3. Step 3: Cross multiply
    664,469,320.80x = 996,703,981.20 × 392,371,528.80
  4. Step 4: Simplify right side
    664,469,320.80x = 391,078,264,864,490,496
  5. Step 5: Solve for x
    x = 391,078,264,864,490,496/664,469,320.80
  6. Step 6: Final answer
    x = 588,557,293.20

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Double scale
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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.