Home / 549,147.60-823,721.40-389,715.30

Finding the Fourth Proportional to 549,147.60, 823,721.40 and 389,715.30

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Solution

The fourth proportional to 549,147.60, 823,721.40 and 389,715.30 is: 584,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,147.60 : 823,721.40 = 389,715.30 : x
  2. Step 2: Convert to fraction form
    549,147.60/823,721.40 = 389,715.30/x
  3. Step 3: Cross multiply
    549,147.60x = 823,721.40 × 389,715.30
  4. Step 4: Simplify right side
    549,147.60x = 321,016,832,517.42
  5. Step 5: Solve for x
    x = 321,016,832,517.42/549,147.60
  6. Step 6: Final answer
    x = 584,572.95

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Similar ratio
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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.