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Finding the Fourth Proportional to 510,679.80, 704,757.24 and 281,247.12

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Solution

The fourth proportional to 510,679.80, 704,757.24 and 281,247.12 is: 388,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,679.80 : 704,757.24 = 281,247.12 : x
  2. Step 2: Convert to fraction form
    510,679.80/704,757.24 = 281,247.12/x
  3. Step 3: Cross multiply
    510,679.80x = 704,757.24 × 281,247.12
  4. Step 4: Simplify right side
    510,679.80x = 198,210,944,049.15
  5. Step 5: Solve for x
    x = 198,210,944,049.15/510,679.80
  6. Step 6: Final answer
    x = 388,131.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.