Home / 566,077.78-781,186.17-311,428.36

Finding the Fourth Proportional to 566,077.78, 781,186.17 and 311,428.36

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Solution

The fourth proportional to 566,077.78, 781,186.17 and 311,428.36 is: 429,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,077.78 : 781,186.17 = 311,428.36 : x
  2. Step 2: Convert to fraction form
    566,077.78/781,186.17 = 311,428.36/x
  3. Step 3: Cross multiply
    566,077.78x = 781,186.17 × 311,428.36
  4. Step 4: Simplify right side
    566,077.78x = 243,283,527,777.78
  5. Step 5: Solve for x
    x = 243,283,527,777.78/566,077.78
  6. Step 6: Final answer
    x = 429,770.50

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.