Home / 1,500,219.62-2,070,309.66-811,891.56

Finding the Fourth Proportional to 1,500,219.62, 2,070,309.66 and 811,891.56

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Solution

The fourth proportional to 1,500,219.62, 2,070,309.66 and 811,891.56 is: 1,120,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,219.62 : 2,070,309.66 = 811,891.56 : x
  2. Step 2: Convert to fraction form
    1,500,219.62/2,070,309.66 = 811,891.56/x
  3. Step 3: Cross multiply
    1,500,219.62x = 2,070,309.66 × 811,891.56
  4. Step 4: Simplify right side
    1,500,219.62x = 1,680,866,939,540.47
  5. Step 5: Solve for x
    x = 1,680,866,939,540.47/1,500,219.62
  6. Step 6: Final answer
    x = 1,120,413.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.