Home / 2,155,378.40-3,233,067.60-1,620,000.80

Finding the Fourth Proportional to 2,155,378.40, 3,233,067.60 and 1,620,000.80

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Solution

The fourth proportional to 2,155,378.40, 3,233,067.60 and 1,620,000.80 is: 2,430,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155,378.40 : 3,233,067.60 = 1,620,000.80 : x
  2. Step 2: Convert to fraction form
    2,155,378.40/3,233,067.60 = 1,620,000.80/x
  3. Step 3: Cross multiply
    2,155,378.40x = 3,233,067.60 × 1,620,000.80
  4. Step 4: Simplify right side
    2,155,378.40x = 5,237,572,098,454.08
  5. Step 5: Solve for x
    x = 5,237,572,098,454.08/2,155,378.40
  6. Step 6: Final answer
    x = 2,430,001.20

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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.