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Finding the Fourth Proportional to 518,887.20, 778,330.80 and 282,691.20

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Solution

The fourth proportional to 518,887.20, 778,330.80 and 282,691.20 is: 424,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,887.20 : 778,330.80 = 282,691.20 : x
  2. Step 2: Convert to fraction form
    518,887.20/778,330.80 = 282,691.20/x
  3. Step 3: Cross multiply
    518,887.20x = 778,330.80 × 282,691.20
  4. Step 4: Simplify right side
    518,887.20x = 220,027,267,848.96
  5. Step 5: Solve for x
    x = 220,027,267,848.96/518,887.20
  6. Step 6: Final answer
    x = 424,036.80

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Similar ratio
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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.