Home / 721,228.78-1,080,887.56-383,542.31

Finding the Fourth Proportional to 721,228.78, 1,080,887.56 and 383,542.31

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Solution

The fourth proportional to 721,228.78, 1,080,887.56 and 383,542.31 is: 574,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,228.78 : 1,080,887.56 = 383,542.31 : x
  2. Step 2: Convert to fraction form
    721,228.78/1,080,887.56 = 383,542.31/x
  3. Step 3: Cross multiply
    721,228.78x = 1,080,887.56 × 383,542.31
  4. Step 4: Simplify right side
    721,228.78x = 414,566,111,612.66
  5. Step 5: Solve for x
    x = 414,566,111,612.66/721,228.78
  6. Step 6: Final answer
    x = 574,805.28

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1.5x scale

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.