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Finding the Fourth Proportional to 486,951.40, 730,427.10 and 287,367.40

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Solution

The fourth proportional to 486,951.40, 730,427.10 and 287,367.40 is: 431,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,951.40 : 730,427.10 = 287,367.40 : x
  2. Step 2: Convert to fraction form
    486,951.40/730,427.10 = 287,367.40/x
  3. Step 3: Cross multiply
    486,951.40x = 730,427.10 × 287,367.40
  4. Step 4: Simplify right side
    486,951.40x = 209,900,936,616.54
  5. Step 5: Solve for x
    x = 209,900,936,616.54/486,951.40
  6. Step 6: Final answer
    x = 431,051.10

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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.