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Finding the Fourth Proportional to 497,630.60, 746,445.90 and 287,160.20

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Solution

The fourth proportional to 497,630.60, 746,445.90 and 287,160.20 is: 430,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,630.60 : 746,445.90 = 287,160.20 : x
  2. Step 2: Convert to fraction form
    497,630.60/746,445.90 = 287,160.20/x
  3. Step 3: Cross multiply
    497,630.60x = 746,445.90 × 287,160.20
  4. Step 4: Simplify right side
    497,630.60x = 214,349,553,933.18
  5. Step 5: Solve for x
    x = 214,349,553,933.18/497,630.60
  6. Step 6: Final answer
    x = 430,740.30

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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.