Home / 684,729.20-1,025,149.80-647,490.80

Finding the Fourth Proportional to 684,729.20, 1,025,149.80 and 647,490.80

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Solution

The fourth proportional to 684,729.20, 1,025,149.80 and 647,490.80 is: 969,397.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,729.20 : 1,025,149.80 = 647,490.80 : x
  2. Step 2: Convert to fraction form
    684,729.20/1,025,149.80 = 647,490.80/x
  3. Step 3: Cross multiply
    684,729.20x = 1,025,149.80 × 647,490.80
  4. Step 4: Simplify right side
    684,729.20x = 663,775,064,121.84
  5. Step 5: Solve for x
    x = 663,775,064,121.84/684,729.20
  6. Step 6: Final answer
    x = 969,397.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.