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Finding the Fourth Proportional to 621,332.64, 857,727.84 and 468,432.72

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Solution

The fourth proportional to 621,332.64, 857,727.84 and 468,432.72 is: 646,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,332.64 : 857,727.84 = 468,432.72 : x
  2. Step 2: Convert to fraction form
    621,332.64/857,727.84 = 468,432.72/x
  3. Step 3: Cross multiply
    621,332.64x = 857,727.84 × 468,432.72
  4. Step 4: Simplify right side
    621,332.64x = 401,787,785,110.93
  5. Step 5: Solve for x
    x = 401,787,785,110.93/621,332.64
  6. Step 6: Final answer
    x = 646,654.88

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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.