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Finding the Fourth Proportional to 520,065.70, 780,171.45 and 204,449.20

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Solution

The fourth proportional to 520,065.70, 780,171.45 and 204,449.20 is: 306,702.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,065.70 : 780,171.45 = 204,449.20 : x
  2. Step 2: Convert to fraction form
    520,065.70/780,171.45 = 204,449.20/x
  3. Step 3: Cross multiply
    520,065.70x = 780,171.45 × 204,449.20
  4. Step 4: Simplify right side
    520,065.70x = 159,505,428,815.34
  5. Step 5: Solve for x
    x = 159,505,428,815.34/520,065.70
  6. Step 6: Final answer
    x = 306,702.46

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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.