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Finding the Fourth Proportional to 625,963.13, 863,749.90 and 371,264.57

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Solution

The fourth proportional to 625,963.13, 863,749.90 and 371,264.57 is: 512,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,963.13 : 863,749.90 = 371,264.57 : x
  2. Step 2: Convert to fraction form
    625,963.13/863,749.90 = 371,264.57/x
  3. Step 3: Cross multiply
    625,963.13x = 863,749.90 × 371,264.57
  4. Step 4: Simplify right side
    625,963.13x = 320,679,735,211.04
  5. Step 5: Solve for x
    x = 320,679,735,211.04/625,963.13
  6. Step 6: Final answer
    x = 512,298.12

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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.