Home / 747,640.85-1,121,406.73-292,146.46

Finding the Fourth Proportional to 747,640.85, 1,121,406.73 and 292,146.46

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Solution

The fourth proportional to 747,640.85, 1,121,406.73 and 292,146.46 is: 438,198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,640.85 : 1,121,406.73 = 292,146.46 : x
  2. Step 2: Convert to fraction form
    747,640.85/1,121,406.73 = 292,146.46/x
  3. Step 3: Cross multiply
    747,640.85x = 1,121,406.73 × 292,146.46
  4. Step 4: Simplify right side
    747,640.85x = 327,615,002,855.79
  5. Step 5: Solve for x
    x = 327,615,002,855.79/747,640.85
  6. Step 6: Final answer
    x = 438,198.37

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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.