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Finding the Fourth Proportional to 520,797.79, 780,581.49 and 200,752.21

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Solution

The fourth proportional to 520,797.79, 780,581.49 and 200,752.21 is: 300,891.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,797.79 : 780,581.49 = 200,752.21 : x
  2. Step 2: Convert to fraction form
    520,797.79/780,581.49 = 200,752.21/x
  3. Step 3: Cross multiply
    520,797.79x = 780,581.49 × 200,752.21
  4. Step 4: Simplify right side
    520,797.79x = 156,703,459,202.59
  5. Step 5: Solve for x
    x = 156,703,459,202.59/520,797.79
  6. Step 6: Final answer
    x = 300,891.18

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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.