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Finding the Fourth Proportional to 458,425.60, 687,638.40 and 332,454.40

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Solution

The fourth proportional to 458,425.60, 687,638.40 and 332,454.40 is: 498,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,425.60 : 687,638.40 = 332,454.40 : x
  2. Step 2: Convert to fraction form
    458,425.60/687,638.40 = 332,454.40/x
  3. Step 3: Cross multiply
    458,425.60x = 687,638.40 × 332,454.40
  4. Step 4: Simplify right side
    458,425.60x = 228,608,411,688.96
  5. Step 5: Solve for x
    x = 228,608,411,688.96/458,425.60
  6. Step 6: Final answer
    x = 498,681.60

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Similar ratio
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1.5x scale

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.