Home / 861,129.40-1,291,233.30-361,929.40

Finding the Fourth Proportional to 861,129.40, 1,291,233.30 and 361,929.40

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Solution

The fourth proportional to 861,129.40, 1,291,233.30 and 361,929.40 is: 542,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,129.40 : 1,291,233.30 = 361,929.40 : x
  2. Step 2: Convert to fraction form
    861,129.40/1,291,233.30 = 361,929.40/x
  3. Step 3: Cross multiply
    861,129.40x = 1,291,233.30 × 361,929.40
  4. Step 4: Simplify right side
    861,129.40x = 467,335,293,529.02
  5. Step 5: Solve for x
    x = 467,335,293,529.02/861,129.40
  6. Step 6: Final answer
    x = 542,700.43

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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.