Home / 723,761.40-1,085,642.10-499,812.60

Finding the Fourth Proportional to 723,761.40, 1,085,642.10 and 499,812.60

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Solution

The fourth proportional to 723,761.40, 1,085,642.10 and 499,812.60 is: 749,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,761.40 : 1,085,642.10 = 499,812.60 : x
  2. Step 2: Convert to fraction form
    723,761.40/1,085,642.10 = 499,812.60/x
  3. Step 3: Cross multiply
    723,761.40x = 1,085,642.10 × 499,812.60
  4. Step 4: Simplify right side
    723,761.40x = 542,617,600,670.46
  5. Step 5: Solve for x
    x = 542,617,600,670.46/723,761.40
  6. Step 6: Final answer
    x = 749,718.90

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Double scale
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Similar ratio
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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.