Home / 1,391,180.18-2,086,968.34-431,718.69

Finding the Fourth Proportional to 1,391,180.18, 2,086,968.34 and 431,718.69

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Solution

The fourth proportional to 1,391,180.18, 2,086,968.34 and 431,718.69 is: 647,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,180.18 : 2,086,968.34 = 431,718.69 : x
  2. Step 2: Convert to fraction form
    1,391,180.18/2,086,968.34 = 431,718.69/x
  3. Step 3: Cross multiply
    1,391,180.18x = 2,086,968.34 × 431,718.69
  4. Step 4: Simplify right side
    1,391,180.18x = 900,983,245,764.54
  5. Step 5: Solve for x
    x = 900,983,245,764.54/1,391,180.18
  6. Step 6: Final answer
    x = 647,639.51

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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.