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Finding the Fourth Proportional to 520,682.52, 780,724.84 and 204,967.20

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Solution

The fourth proportional to 520,682.52, 780,724.84 and 204,967.20 is: 307,333.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,682.52 : 780,724.84 = 204,967.20 : x
  2. Step 2: Convert to fraction form
    520,682.52/780,724.84 = 204,967.20/x
  3. Step 3: Cross multiply
    520,682.52x = 780,724.84 × 204,967.20
  4. Step 4: Simplify right side
    520,682.52x = 160,022,984,425.25
  5. Step 5: Solve for x
    x = 160,022,984,425.25/520,682.52
  6. Step 6: Final answer
    x = 307,333.12

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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.