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Finding the Fourth Proportional to 438,891.60, 658,337.40 and 404,331.60

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Solution

The fourth proportional to 438,891.60, 658,337.40 and 404,331.60 is: 606,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,891.60 : 658,337.40 = 404,331.60 : x
  2. Step 2: Convert to fraction form
    438,891.60/658,337.40 = 404,331.60/x
  3. Step 3: Cross multiply
    438,891.60x = 658,337.40 × 404,331.60
  4. Step 4: Simplify right side
    438,891.60x = 266,186,614,281.84
  5. Step 5: Solve for x
    x = 266,186,614,281.84/438,891.60
  6. Step 6: Final answer
    x = 606,497.40

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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.