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Finding the Fourth Proportional to 615,629.60, 923,444.40 and 489,658.40

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Solution

The fourth proportional to 615,629.60, 923,444.40 and 489,658.40 is: 734,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,629.60 : 923,444.40 = 489,658.40 : x
  2. Step 2: Convert to fraction form
    615,629.60/923,444.40 = 489,658.40/x
  3. Step 3: Cross multiply
    615,629.60x = 923,444.40 × 489,658.40
  4. Step 4: Simplify right side
    615,629.60x = 452,172,307,392.96
  5. Step 5: Solve for x
    x = 452,172,307,392.96/615,629.60
  6. Step 6: Final answer
    x = 734,487.60

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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.