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Finding the Fourth Proportional to 520,022.80, 780,252.90 and 283,535.20

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Solution

The fourth proportional to 520,022.80, 780,252.90 and 283,535.20 is: 425,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,022.80 : 780,252.90 = 283,535.20 : x
  2. Step 2: Convert to fraction form
    520,022.80/780,252.90 = 283,535.20/x
  3. Step 3: Cross multiply
    520,022.80x = 780,252.90 × 283,535.20
  4. Step 4: Simplify right side
    520,022.80x = 221,229,162,052.08
  5. Step 5: Solve for x
    x = 221,229,162,052.08/520,022.80
  6. Step 6: Final answer
    x = 425,422.04

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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.