Home / 3,489,988.80-5,235,328.80-1,215,163.20

Finding the Fourth Proportional to 3,489,988.80, 5,235,328.80 and 1,215,163.20

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Solution

The fourth proportional to 3,489,988.80, 5,235,328.80 and 1,215,163.20 is: 1,822,865.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489,988.80 : 5,235,328.80 = 1,215,163.20 : x
  2. Step 2: Convert to fraction form
    3,489,988.80/5,235,328.80 = 1,215,163.20/x
  3. Step 3: Cross multiply
    3,489,988.80x = 5,235,328.80 × 1,215,163.20
  4. Step 4: Simplify right side
    3,489,988.80x = 6,361,778,897,660.16
  5. Step 5: Solve for x
    x = 6,361,778,897,660.16/3,489,988.80
  6. Step 6: Final answer
    x = 1,822,865.13

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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.