Home / 818,428.17-1,129,487.66-496,151.85

Finding the Fourth Proportional to 818,428.17, 1,129,487.66 and 496,151.85

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Solution

The fourth proportional to 818,428.17, 1,129,487.66 and 496,151.85 is: 684,723.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,428.17 : 1,129,487.66 = 496,151.85 : x
  2. Step 2: Convert to fraction form
    818,428.17/1,129,487.66 = 496,151.85/x
  3. Step 3: Cross multiply
    818,428.17x = 1,129,487.66 × 496,151.85
  4. Step 4: Simplify right side
    818,428.17x = 560,397,392,061.17
  5. Step 5: Solve for x
    x = 560,397,392,061.17/818,428.17
  6. Step 6: Final answer
    x = 684,723.98

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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.