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Finding the Fourth Proportional to 615,621.60, 923,432.40 and 424,850.40

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Solution

The fourth proportional to 615,621.60, 923,432.40 and 424,850.40 is: 637,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,621.60 : 923,432.40 = 424,850.40 : x
  2. Step 2: Convert to fraction form
    615,621.60/923,432.40 = 424,850.40/x
  3. Step 3: Cross multiply
    615,621.60x = 923,432.40 × 424,850.40
  4. Step 4: Simplify right side
    615,621.60x = 392,320,624,512.96
  5. Step 5: Solve for x
    x = 392,320,624,512.96/615,621.60
  6. Step 6: Final answer
    x = 637,275.60

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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.