Home / 724,377,776.80-1,086,566,665.20-521,816,087.20

Finding the Fourth Proportional to 724,377,776.80, 1,086,566,665.20 and 521,816,087.20

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Solution

The fourth proportional to 724,377,776.80, 1,086,566,665.20 and 521,816,087.20 is: 782,724,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,377,776.80 : 1,086,566,665.20 = 521,816,087.20 : x
  2. Step 2: Convert to fraction form
    724,377,776.80/1,086,566,665.20 = 521,816,087.20/x
  3. Step 3: Cross multiply
    724,377,776.80x = 1,086,566,665.20 × 521,816,087.20
  4. Step 4: Simplify right side
    724,377,776.80x = 566,987,965,716,616,448
  5. Step 5: Solve for x
    x = 566,987,965,716,616,448/724,377,776.80
  6. Step 6: Final answer
    x = 782,724,130.80

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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.