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Finding the Fourth Proportional to 402,857.60, 604,286.40 and 377,974.40

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Solution

The fourth proportional to 402,857.60, 604,286.40 and 377,974.40 is: 566,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,857.60 : 604,286.40 = 377,974.40 : x
  2. Step 2: Convert to fraction form
    402,857.60/604,286.40 = 377,974.40/x
  3. Step 3: Cross multiply
    402,857.60x = 604,286.40 × 377,974.40
  4. Step 4: Simplify right side
    402,857.60x = 228,404,789,468.16
  5. Step 5: Solve for x
    x = 228,404,789,468.16/402,857.60
  6. Step 6: Final answer
    x = 566,961.60

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Double scale
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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.