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Finding the Fourth Proportional to 624,470.63, 861,785.21 and 382,886.41

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Solution

The fourth proportional to 624,470.63, 861,785.21 and 382,886.41 is: 528,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,470.63 : 861,785.21 = 382,886.41 : x
  2. Step 2: Convert to fraction form
    624,470.63/861,785.21 = 382,886.41/x
  3. Step 3: Cross multiply
    624,470.63x = 861,785.21 × 382,886.41
  4. Step 4: Simplify right side
    624,470.63x = 329,965,845,248.00
  5. Step 5: Solve for x
    x = 329,965,845,248.00/624,470.63
  6. Step 6: Final answer
    x = 528,392.90

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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.