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Finding the Fourth Proportional to 548,411.20, 822,616.80 and 512,981.80

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Solution

The fourth proportional to 548,411.20, 822,616.80 and 512,981.80 is: 769,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,411.20 : 822,616.80 = 512,981.80 : x
  2. Step 2: Convert to fraction form
    548,411.20/822,616.80 = 512,981.80/x
  3. Step 3: Cross multiply
    548,411.20x = 822,616.80 × 512,981.80
  4. Step 4: Simplify right side
    548,411.20x = 421,987,446,774.24
  5. Step 5: Solve for x
    x = 421,987,446,774.24/548,411.20
  6. Step 6: Final answer
    x = 769,472.70

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Similar ratio
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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.