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Finding the Fourth Proportional to 631,125.20, 870,957.60 and 359,213.96

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Solution

The fourth proportional to 631,125.20, 870,957.60 and 359,213.96 is: 495,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,125.20 : 870,957.60 = 359,213.96 : x
  2. Step 2: Convert to fraction form
    631,125.20/870,957.60 = 359,213.96/x
  3. Step 3: Cross multiply
    631,125.20x = 870,957.60 × 359,213.96
  4. Step 4: Simplify right side
    631,125.20x = 312,860,128,488.10
  5. Step 5: Solve for x
    x = 312,860,128,488.10/631,125.20
  6. Step 6: Final answer
    x = 495,718.01

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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.