Home / 728,400.73-1,005,531.46-518,983.63

Finding the Fourth Proportional to 728,400.73, 1,005,531.46 and 518,983.63

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Solution

The fourth proportional to 728,400.73, 1,005,531.46 and 518,983.63 is: 716,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,400.73 : 1,005,531.46 = 518,983.63 : x
  2. Step 2: Convert to fraction form
    728,400.73/1,005,531.46 = 518,983.63/x
  3. Step 3: Cross multiply
    728,400.73x = 1,005,531.46 × 518,983.63
  4. Step 4: Simplify right side
    728,400.73x = 521,854,367,190.00
  5. Step 5: Solve for x
    x = 521,854,367,190.00/728,400.73
  6. Step 6: Final answer
    x = 716,438.56

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Double scale
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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.