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Finding the Fourth Proportional to 631,276.38, 871,126.11 and 359,410.68

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Solution

The fourth proportional to 631,276.38, 871,126.11 and 359,410.68 is: 495,966.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,276.38 : 871,126.11 = 359,410.68 : x
  2. Step 2: Convert to fraction form
    631,276.38/871,126.11 = 359,410.68/x
  3. Step 3: Cross multiply
    631,276.38x = 871,126.11 × 359,410.68
  4. Step 4: Simplify right side
    631,276.38x = 313,092,027,560.86
  5. Step 5: Solve for x
    x = 313,092,027,560.86/631,276.38
  6. Step 6: Final answer
    x = 495,966.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.