Home / 721,229.78-1,080,889.05-383,543.31

Finding the Fourth Proportional to 721,229.78, 1,080,889.05 and 383,543.31

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Solution

The fourth proportional to 721,229.78, 1,080,889.05 and 383,543.31 is: 574,806.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,229.78 : 1,080,889.05 = 383,543.31 : x
  2. Step 2: Convert to fraction form
    721,229.78/1,080,889.05 = 383,543.31/x
  3. Step 3: Cross multiply
    721,229.78x = 1,080,889.05 × 383,543.31
  4. Step 4: Simplify right side
    721,229.78x = 414,567,763,979.76
  5. Step 5: Solve for x
    x = 414,567,763,979.76/721,229.78
  6. Step 6: Final answer
    x = 574,806.77

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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.