Home / 729,140.46-1,006,190.28-397,983.66

Finding the Fourth Proportional to 729,140.46, 1,006,190.28 and 397,983.66

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Solution

The fourth proportional to 729,140.46, 1,006,190.28 and 397,983.66 is: 549,204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,140.46 : 1,006,190.28 = 397,983.66 : x
  2. Step 2: Convert to fraction form
    729,140.46/1,006,190.28 = 397,983.66/x
  3. Step 3: Cross multiply
    729,140.46x = 1,006,190.28 × 397,983.66
  4. Step 4: Simplify right side
    729,140.46x = 400,447,290,290.83
  5. Step 5: Solve for x
    x = 400,447,290,290.83/729,140.46
  6. Step 6: Final answer
    x = 549,204.59

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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.