Home / 728,401.20-1,005,174-422,458.26

Finding the Fourth Proportional to 728,401.20, 1,005,174 and 422,458.26

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Solution

The fourth proportional to 728,401.20, 1,005,174 and 422,458.26 is: 582,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,401.20 : 1,005,174 = 422,458.26 : x
  2. Step 2: Convert to fraction form
    728,401.20/1,005,174 = 422,458.26/x
  3. Step 3: Cross multiply
    728,401.20x = 1,005,174 × 422,458.26
  4. Step 4: Simplify right side
    728,401.20x = 424,644,059,037.24
  5. Step 5: Solve for x
    x = 424,644,059,037.24/728,401.20
  6. Step 6: Final answer
    x = 582,981.00

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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.