Home / 721,948.22-996,300.33-395,255.78

Finding the Fourth Proportional to 721,948.22, 996,300.33 and 395,255.78

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Solution

The fourth proportional to 721,948.22, 996,300.33 and 395,255.78 is: 545,459.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,948.22 : 996,300.33 = 395,255.78 : x
  2. Step 2: Convert to fraction form
    721,948.22/996,300.33 = 395,255.78/x
  3. Step 3: Cross multiply
    721,948.22x = 996,300.33 × 395,255.78
  4. Step 4: Simplify right side
    721,948.22x = 393,793,464,048.41
  5. Step 5: Solve for x
    x = 393,793,464,048.41/721,948.22
  6. Step 6: Final answer
    x = 545,459.43

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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.