Home / 3,121,218.80-4,680,856.20-1,228,540.40

Finding the Fourth Proportional to 3,121,218.80, 4,680,856.20 and 1,228,540.40

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Solution

The fourth proportional to 3,121,218.80, 4,680,856.20 and 1,228,540.40 is: 1,842,428.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,218.80 : 4,680,856.20 = 1,228,540.40 : x
  2. Step 2: Convert to fraction form
    3,121,218.80/4,680,856.20 = 1,228,540.40/x
  3. Step 3: Cross multiply
    3,121,218.80x = 4,680,856.20 × 1,228,540.40
  4. Step 4: Simplify right side
    3,121,218.80x = 5,750,620,948,290.48
  5. Step 5: Solve for x
    x = 5,750,620,948,290.48/3,121,218.80
  6. Step 6: Final answer
    x = 1,842,428.01

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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.