Home / 728,270,998.80-1,092,406,498.20-319,327,149.30

Finding the Fourth Proportional to 728,270,998.80, 1,092,406,498.20 and 319,327,149.30

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Solution

The fourth proportional to 728,270,998.80, 1,092,406,498.20 and 319,327,149.30 is: 478,990,723.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,270,998.80 : 1,092,406,498.20 = 319,327,149.30 : x
  2. Step 2: Convert to fraction form
    728,270,998.80/1,092,406,498.20 = 319,327,149.30/x
  3. Step 3: Cross multiply
    728,270,998.80x = 1,092,406,498.20 × 319,327,149.30
  4. Step 4: Simplify right side
    728,270,998.80x = 348,835,052,947,001,600
  5. Step 5: Solve for x
    x = 348,835,052,947,001,600/728,270,998.80
  6. Step 6: Final answer
    x = 478,990,723.95

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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.