Home / 729,100.37-1,006,134.90-397,943.66

Finding the Fourth Proportional to 729,100.37, 1,006,134.90 and 397,943.66

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Solution

The fourth proportional to 729,100.37, 1,006,134.90 and 397,943.66 is: 549,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,100.37 : 1,006,134.90 = 397,943.66 : x
  2. Step 2: Convert to fraction form
    729,100.37/1,006,134.90 = 397,943.66/x
  3. Step 3: Cross multiply
    729,100.37x = 1,006,134.90 × 397,943.66
  4. Step 4: Simplify right side
    729,100.37x = 400,385,004,559.73
  5. Step 5: Solve for x
    x = 400,385,004,559.73/729,100.37
  6. Step 6: Final answer
    x = 549,149.36

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1.5x scale

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.