Home / 2,131,893.60-3,193,693.20-1,287,938.40

Finding the Fourth Proportional to 2,131,893.60, 3,193,693.20 and 1,287,938.40

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Solution

The fourth proportional to 2,131,893.60, 3,193,693.20 and 1,287,938.40 is: 1,929,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131,893.60 : 3,193,693.20 = 1,287,938.40 : x
  2. Step 2: Convert to fraction form
    2,131,893.60/3,193,693.20 = 1,287,938.40/x
  3. Step 3: Cross multiply
    2,131,893.60x = 3,193,693.20 × 1,287,938.40
  4. Step 4: Simplify right side
    2,131,893.60x = 4,113,280,110,098.88
  5. Step 5: Solve for x
    x = 4,113,280,110,098.88/2,131,893.60
  6. Step 6: Final answer
    x = 1,929,402.16

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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.