Home / 818,794.50-1,227,691.47-392,460.78

Finding the Fourth Proportional to 818,794.50, 1,227,691.47 and 392,460.78

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Solution

The fourth proportional to 818,794.50, 1,227,691.47 and 392,460.78 is: 588,451.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,794.50 : 1,227,691.47 = 392,460.78 : x
  2. Step 2: Convert to fraction form
    818,794.50/1,227,691.47 = 392,460.78/x
  3. Step 3: Cross multiply
    818,794.50x = 1,227,691.47 × 392,460.78
  4. Step 4: Simplify right side
    818,794.50x = 481,820,751,915.55
  5. Step 5: Solve for x
    x = 481,820,751,915.55/818,794.50
  6. Step 6: Final answer
    x = 588,451.38

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Double scale
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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.