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Finding the Fourth Proportional to 520,422.62, 780,466.72 and 165,353.66

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Solution

The fourth proportional to 520,422.62, 780,466.72 and 165,353.66 is: 247,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,422.62 : 780,466.72 = 165,353.66 : x
  2. Step 2: Convert to fraction form
    520,422.62/780,466.72 = 165,353.66/x
  3. Step 3: Cross multiply
    520,422.62x = 780,466.72 × 165,353.66
  4. Step 4: Simplify right side
    520,422.62x = 129,053,028,660.20
  5. Step 5: Solve for x
    x = 129,053,028,660.20/520,422.62
  6. Step 6: Final answer
    x = 247,977.36

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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.