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Finding the Fourth Proportional to 437,573.70, 656,360.55 and 408,049.20

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Solution

The fourth proportional to 437,573.70, 656,360.55 and 408,049.20 is: 612,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,573.70 : 656,360.55 = 408,049.20 : x
  2. Step 2: Convert to fraction form
    437,573.70/656,360.55 = 408,049.20/x
  3. Step 3: Cross multiply
    437,573.70x = 656,360.55 × 408,049.20
  4. Step 4: Simplify right side
    437,573.70x = 267,827,397,339.06
  5. Step 5: Solve for x
    x = 267,827,397,339.06/437,573.70
  6. Step 6: Final answer
    x = 612,073.80

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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.