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Finding the Fourth Proportional to 625,928.76, 863,758.38 and 371,127.48

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Solution

The fourth proportional to 625,928.76, 863,758.38 and 371,127.48 is: 512,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,928.76 : 863,758.38 = 371,127.48 : x
  2. Step 2: Convert to fraction form
    625,928.76/863,758.38 = 371,127.48/x
  3. Step 3: Cross multiply
    625,928.76x = 863,758.38 × 371,127.48
  4. Step 4: Simplify right side
    625,928.76x = 320,564,470,898.28
  5. Step 5: Solve for x
    x = 320,564,470,898.28/625,928.76
  6. Step 6: Final answer
    x = 512,142.10

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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.