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Finding the Fourth Proportional to 631,279.38, 871,210.04 and 359,347.40

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Solution

The fourth proportional to 631,279.38, 871,210.04 and 359,347.40 is: 495,924.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,279.38 : 871,210.04 = 359,347.40 : x
  2. Step 2: Convert to fraction form
    631,279.38/871,210.04 = 359,347.40/x
  3. Step 3: Cross multiply
    631,279.38x = 871,210.04 × 359,347.40
  4. Step 4: Simplify right side
    631,279.38x = 313,067,056,575.11
  5. Step 5: Solve for x
    x = 313,067,056,575.11/631,279.38
  6. Step 6: Final answer
    x = 495,924.73

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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.