Home / 820,201.20-1,229,931.72-346,642.80

Finding the Fourth Proportional to 820,201.20, 1,229,931.72 and 346,642.80

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Solution

The fourth proportional to 820,201.20, 1,229,931.72 and 346,642.80 is: 519,807.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,201.20 : 1,229,931.72 = 346,642.80 : x
  2. Step 2: Convert to fraction form
    820,201.20/1,229,931.72 = 346,642.80/x
  3. Step 3: Cross multiply
    820,201.20x = 1,229,931.72 × 346,642.80
  4. Step 4: Simplify right side
    820,201.20x = 426,346,975,229.62
  5. Step 5: Solve for x
    x = 426,346,975,229.62/820,201.20
  6. Step 6: Final answer
    x = 519,807.79

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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.