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Finding the Fourth Proportional to 615,280.90, 921,366.15 and 403,773.70

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Solution

The fourth proportional to 615,280.90, 921,366.15 and 403,773.70 is: 604,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,280.90 : 921,366.15 = 403,773.70 : x
  2. Step 2: Convert to fraction form
    615,280.90/921,366.15 = 403,773.70/x
  3. Step 3: Cross multiply
    615,280.90x = 921,366.15 × 403,773.70
  4. Step 4: Simplify right side
    615,280.90x = 372,023,419,440.26
  5. Step 5: Solve for x
    x = 372,023,419,440.26/615,280.90
  6. Step 6: Final answer
    x = 604,639.96

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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.