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Finding the Fourth Proportional to 637,687.74, 879,943.96 and 392,633.58

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Solution

The fourth proportional to 637,687.74, 879,943.96 and 392,633.58 is: 541,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,687.74 : 879,943.96 = 392,633.58 : x
  2. Step 2: Convert to fraction form
    637,687.74/879,943.96 = 392,633.58/x
  3. Step 3: Cross multiply
    637,687.74x = 879,943.96 × 392,633.58
  4. Step 4: Simplify right side
    637,687.74x = 345,495,546,232.59
  5. Step 5: Solve for x
    x = 345,495,546,232.59/637,687.74
  6. Step 6: Final answer
    x = 541,794.24

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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.