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Finding the Fourth Proportional to 477,843.40, 716,765.10 and 426,233.80

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Solution

The fourth proportional to 477,843.40, 716,765.10 and 426,233.80 is: 639,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,843.40 : 716,765.10 = 426,233.80 : x
  2. Step 2: Convert to fraction form
    477,843.40/716,765.10 = 426,233.80/x
  3. Step 3: Cross multiply
    477,843.40x = 716,765.10 × 426,233.80
  4. Step 4: Simplify right side
    477,843.40x = 305,509,512,280.38
  5. Step 5: Solve for x
    x = 305,509,512,280.38/477,843.40
  6. Step 6: Final answer
    x = 639,350.70

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Similar ratio
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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.