Home / 820,171.20-1,229,887.68-346,612.80

Finding the Fourth Proportional to 820,171.20, 1,229,887.68 and 346,612.80

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Solution

The fourth proportional to 820,171.20, 1,229,887.68 and 346,612.80 is: 519,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,171.20 : 1,229,887.68 = 346,612.80 : x
  2. Step 2: Convert to fraction form
    820,171.20/1,229,887.68 = 346,612.80/x
  3. Step 3: Cross multiply
    820,171.20x = 1,229,887.68 × 346,612.80
  4. Step 4: Simplify right side
    820,171.20x = 426,294,812,450.30
  5. Step 5: Solve for x
    x = 426,294,812,450.30/820,171.20
  6. Step 6: Final answer
    x = 519,763.21

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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.