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Finding the Fourth Proportional to 631,219.48, 871,088.46 and 359,304.88

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Solution

The fourth proportional to 631,219.48, 871,088.46 and 359,304.88 is: 495,843.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,219.48 : 871,088.46 = 359,304.88 : x
  2. Step 2: Convert to fraction form
    631,219.48/871,088.46 = 359,304.88/x
  3. Step 3: Cross multiply
    631,219.48x = 871,088.46 × 359,304.88
  4. Step 4: Simplify right side
    631,219.48x = 312,986,334,589.69
  5. Step 5: Solve for x
    x = 312,986,334,589.69/631,219.48
  6. Step 6: Final answer
    x = 495,843.91

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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.