Home / 721,943.23-996,293.40-395,250.72

Finding the Fourth Proportional to 721,943.23, 996,293.40 and 395,250.72

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Solution

The fourth proportional to 721,943.23, 996,293.40 and 395,250.72 is: 545,452.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,943.23 : 996,293.40 = 395,250.72 : x
  2. Step 2: Convert to fraction form
    721,943.23/996,293.40 = 395,250.72/x
  3. Step 3: Cross multiply
    721,943.23x = 996,293.40 × 395,250.72
  4. Step 4: Simplify right side
    721,943.23x = 393,785,683,681.25
  5. Step 5: Solve for x
    x = 393,785,683,681.25/721,943.23
  6. Step 6: Final answer
    x = 545,452.42

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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.