Home / 724,102,780.16-999,367,132.80-406,598,669.12

Finding the Fourth Proportional to 724,102,780.16, 999,367,132.80 and 406,598,669.12

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Solution

The fourth proportional to 724,102,780.16, 999,367,132.80 and 406,598,669.12 is: 561,165,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,102,780.16 : 999,367,132.80 = 406,598,669.12 : x
  2. Step 2: Convert to fraction form
    724,102,780.16/999,367,132.80 = 406,598,669.12/x
  3. Step 3: Cross multiply
    724,102,780.16x = 999,367,132.80 × 406,598,669.12
  4. Step 4: Simplify right side
    724,102,780.16x = 406,341,346,158,750,272
  5. Step 5: Solve for x
    x = 406,341,346,158,750,272/724,102,780.16
  6. Step 6: Final answer
    x = 561,165,289.37

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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.