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Finding the Fourth Proportional to 625,902.64, 863,746.08 and 339,422.64

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Solution

The fourth proportional to 625,902.64, 863,746.08 and 339,422.64 is: 468,403.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,902.64 : 863,746.08 = 339,422.64 : x
  2. Step 2: Convert to fraction form
    625,902.64/863,746.08 = 339,422.64/x
  3. Step 3: Cross multiply
    625,902.64x = 863,746.08 × 339,422.64
  4. Step 4: Simplify right side
    625,902.64x = 293,174,974,763.25
  5. Step 5: Solve for x
    x = 293,174,974,763.25/625,902.64
  6. Step 6: Final answer
    x = 468,403.48

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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.