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Finding the Fourth Proportional to 437,644.60, 656,466.90 and 403,430.20

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Solution

The fourth proportional to 437,644.60, 656,466.90 and 403,430.20 is: 605,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,644.60 : 656,466.90 = 403,430.20 : x
  2. Step 2: Convert to fraction form
    437,644.60/656,466.90 = 403,430.20/x
  3. Step 3: Cross multiply
    437,644.60x = 656,466.90 × 403,430.20
  4. Step 4: Simplify right side
    437,644.60x = 264,838,572,760.38
  5. Step 5: Solve for x
    x = 264,838,572,760.38/437,644.60
  6. Step 6: Final answer
    x = 605,145.30

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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.