Home / 791,839.80-1,187,748.90-259,378.20

Finding the Fourth Proportional to 791,839.80, 1,187,748.90 and 259,378.20

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Solution

The fourth proportional to 791,839.80, 1,187,748.90 and 259,378.20 is: 389,063.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,839.80 : 1,187,748.90 = 259,378.20 : x
  2. Step 2: Convert to fraction form
    791,839.80/1,187,748.90 = 259,378.20/x
  3. Step 3: Cross multiply
    791,839.80x = 1,187,748.90 × 259,378.20
  4. Step 4: Simplify right side
    791,839.80x = 308,076,171,733.98
  5. Step 5: Solve for x
    x = 308,076,171,733.98/791,839.80
  6. Step 6: Final answer
    x = 389,063.76

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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.