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Finding the Fourth Proportional to 658,638.40, 908,909.16 and 372,152.44

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Solution

The fourth proportional to 658,638.40, 908,909.16 and 372,152.44 is: 513,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,638.40 : 908,909.16 = 372,152.44 : x
  2. Step 2: Convert to fraction form
    658,638.40/908,909.16 = 372,152.44/x
  3. Step 3: Cross multiply
    658,638.40x = 908,909.16 × 372,152.44
  4. Step 4: Simplify right side
    658,638.40x = 338,252,761,632.35
  5. Step 5: Solve for x
    x = 338,252,761,632.35/658,638.40
  6. Step 6: Final answer
    x = 513,563.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.