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Finding the Fourth Proportional to 497,628.60, 746,442.90 and 287,158.20

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Solution

The fourth proportional to 497,628.60, 746,442.90 and 287,158.20 is: 430,737.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,628.60 : 746,442.90 = 287,158.20 : x
  2. Step 2: Convert to fraction form
    497,628.60/746,442.90 = 287,158.20/x
  3. Step 3: Cross multiply
    497,628.60x = 746,442.90 × 287,158.20
  4. Step 4: Simplify right side
    497,628.60x = 214,347,199,566.78
  5. Step 5: Solve for x
    x = 214,347,199,566.78/497,628.60
  6. Step 6: Final answer
    x = 430,737.30

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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.