Home / 724,272,019.74-999,519,529.68-406,788,213.78

Finding the Fourth Proportional to 724,272,019.74, 999,519,529.68 and 406,788,213.78

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Solution

The fourth proportional to 724,272,019.74, 999,519,529.68 and 406,788,213.78 is: 561,381,294.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,272,019.74 : 999,519,529.68 = 406,788,213.78 : x
  2. Step 2: Convert to fraction form
    724,272,019.74/999,519,529.68 = 406,788,213.78/x
  3. Step 3: Cross multiply
    724,272,019.74x = 999,519,529.68 × 406,788,213.78
  4. Step 4: Simplify right side
    724,272,019.74x = 406,592,764,116,752,832
  5. Step 5: Solve for x
    x = 406,592,764,116,752,832/724,272,019.74
  6. Step 6: Final answer
    x = 561,381,294.64

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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.