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Finding the Fourth Proportional to 520,566.78, 780,850.17 and 165,580.86

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Solution

The fourth proportional to 520,566.78, 780,850.17 and 165,580.86 is: 248,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,566.78 : 780,850.17 = 165,580.86 : x
  2. Step 2: Convert to fraction form
    520,566.78/780,850.17 = 165,580.86/x
  3. Step 3: Cross multiply
    520,566.78x = 780,850.17 × 165,580.86
  4. Step 4: Simplify right side
    520,566.78x = 129,293,842,679.75
  5. Step 5: Solve for x
    x = 129,293,842,679.75/520,566.78
  6. Step 6: Final answer
    x = 248,371.29

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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.