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Finding the Fourth Proportional to 631,321.29, 871,147.71 and 359,389.71

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Solution

The fourth proportional to 631,321.29, 871,147.71 and 359,389.71 is: 495,914.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,321.29 : 871,147.71 = 359,389.71 : x
  2. Step 2: Convert to fraction form
    631,321.29/871,147.71 = 359,389.71/x
  3. Step 3: Cross multiply
    631,321.29x = 871,147.71 × 359,389.71
  4. Step 4: Simplify right side
    631,321.29x = 313,081,522,864.06
  5. Step 5: Solve for x
    x = 313,081,522,864.06/631,321.29
  6. Step 6: Final answer
    x = 495,914.72

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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.