Home / 2,131,895.60-3,193,696.20-1,287,940.40

Finding the Fourth Proportional to 2,131,895.60, 3,193,696.20 and 1,287,940.40

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Solution

The fourth proportional to 2,131,895.60, 3,193,696.20 and 1,287,940.40 is: 1,929,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131,895.60 : 3,193,696.20 = 1,287,940.40 : x
  2. Step 2: Convert to fraction form
    2,131,895.60/3,193,696.20 = 1,287,940.40/x
  3. Step 3: Cross multiply
    2,131,895.60x = 3,193,696.20 × 1,287,940.40
  4. Step 4: Simplify right side
    2,131,895.60x = 4,113,290,361,306.48
  5. Step 5: Solve for x
    x = 4,113,290,361,306.48/2,131,895.60
  6. Step 6: Final answer
    x = 1,929,405.16

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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.