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Finding the Fourth Proportional to 637,695.45, 879,954.57 and 392,641.29

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Solution

The fourth proportional to 637,695.45, 879,954.57 and 392,641.29 is: 541,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,695.45 : 879,954.57 = 392,641.29 : x
  2. Step 2: Convert to fraction form
    637,695.45/879,954.57 = 392,641.29/x
  3. Step 3: Cross multiply
    637,695.45x = 879,954.57 × 392,641.29
  4. Step 4: Simplify right side
    637,695.45x = 345,506,497,506.20
  5. Step 5: Solve for x
    x = 345,506,497,506.20/637,695.45
  6. Step 6: Final answer
    x = 541,804.87

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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.