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Finding the Fourth Proportional to 437,069.80, 655,863.90 and 287,738.20

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Solution

The fourth proportional to 437,069.80, 655,863.90 and 287,738.20 is: 431,777.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,069.80 : 655,863.90 = 287,738.20 : x
  2. Step 2: Convert to fraction form
    437,069.80/655,863.90 = 287,738.20/x
  3. Step 3: Cross multiply
    437,069.80x = 655,863.90 × 287,738.20
  4. Step 4: Simplify right side
    437,069.80x = 188,717,098,030.98
  5. Step 5: Solve for x
    x = 188,717,098,030.98/437,069.80
  6. Step 6: Final answer
    x = 431,777.94

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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.