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Finding the Fourth Proportional to 520,209.44, 780,257.44 and 352,805.12

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Solution

The fourth proportional to 520,209.44, 780,257.44 and 352,805.12 is: 529,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,209.44 : 780,257.44 = 352,805.12 : x
  2. Step 2: Convert to fraction form
    520,209.44/780,257.44 = 352,805.12/x
  3. Step 3: Cross multiply
    520,209.44x = 780,257.44 × 352,805.12
  4. Step 4: Simplify right side
    520,209.44x = 275,278,819,750.09
  5. Step 5: Solve for x
    x = 275,278,819,750.09/520,209.44
  6. Step 6: Final answer
    x = 529,169.21

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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.