Home / 631,176.20-870,990.38-359,243.23

Finding the Fourth Proportional to 631,176.20, 870,990.38 and 359,243.23

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Solution

The fourth proportional to 631,176.20, 870,990.38 and 359,243.23 is: 495,737.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,176.20 : 870,990.38 = 359,243.23 : x
  2. Step 2: Convert to fraction form
    631,176.20/870,990.38 = 359,243.23/x
  3. Step 3: Cross multiply
    631,176.20x = 870,990.38 × 359,243.23
  4. Step 4: Simplify right side
    631,176.20x = 312,897,397,410.13
  5. Step 5: Solve for x
    x = 312,897,397,410.13/631,176.20
  6. Step 6: Final answer
    x = 495,737.01

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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.