Home / 721,948.20-996,300.26-395,255.72

Finding the Fourth Proportional to 721,948.20, 996,300.26 and 395,255.72

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Solution

The fourth proportional to 721,948.20, 996,300.26 and 395,255.72 is: 545,459.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,948.20 : 996,300.26 = 395,255.72 : x
  2. Step 2: Convert to fraction form
    721,948.20/996,300.26 = 395,255.72/x
  3. Step 3: Cross multiply
    721,948.20x = 996,300.26 × 395,255.72
  4. Step 4: Simplify right side
    721,948.20x = 393,793,376,602.49
  5. Step 5: Solve for x
    x = 393,793,376,602.49/721,948.20
  6. Step 6: Final answer
    x = 545,459.32

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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.