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Finding the Fourth Proportional to 543,139.80, 813,834.90 and 453,910.20

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Solution

The fourth proportional to 543,139.80, 813,834.90 and 453,910.20 is: 680,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,139.80 : 813,834.90 = 453,910.20 : x
  2. Step 2: Convert to fraction form
    543,139.80/813,834.90 = 453,910.20/x
  3. Step 3: Cross multiply
    543,139.80x = 813,834.90 × 453,910.20
  4. Step 4: Simplify right side
    543,139.80x = 369,407,962,225.98
  5. Step 5: Solve for x
    x = 369,407,962,225.98/543,139.80
  6. Step 6: Final answer
    x = 680,134.22

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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.