Home / 1,336,694.20-2,005,332.90-389,987.80

Finding the Fourth Proportional to 1,336,694.20, 2,005,332.90 and 389,987.80

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Solution

The fourth proportional to 1,336,694.20, 2,005,332.90 and 389,987.80 is: 585,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,694.20 : 2,005,332.90 = 389,987.80 : x
  2. Step 2: Convert to fraction form
    1,336,694.20/2,005,332.90 = 389,987.80/x
  3. Step 3: Cross multiply
    1,336,694.20x = 2,005,332.90 × 389,987.80
  4. Step 4: Simplify right side
    1,336,694.20x = 782,055,365,938.62
  5. Step 5: Solve for x
    x = 782,055,365,938.62/1,336,694.20
  6. Step 6: Final answer
    x = 585,066.78

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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.