Home / 722,720.76-997,321.05-396,031.83

Finding the Fourth Proportional to 722,720.76, 997,321.05 and 396,031.83

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Solution

The fourth proportional to 722,720.76, 997,321.05 and 396,031.83 is: 546,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,720.76 : 997,321.05 = 396,031.83 : x
  2. Step 2: Convert to fraction form
    722,720.76/997,321.05 = 396,031.83/x
  3. Step 3: Cross multiply
    722,720.76x = 997,321.05 × 396,031.83
  4. Step 4: Simplify right side
    722,720.76x = 394,970,880,529.02
  5. Step 5: Solve for x
    x = 394,970,880,529.02/722,720.76
  6. Step 6: Final answer
    x = 546,505.51

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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.