Home / 1,310,469.60-1,965,769.20-680,613.60

Finding the Fourth Proportional to 1,310,469.60, 1,965,769.20 and 680,613.60

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Solution

The fourth proportional to 1,310,469.60, 1,965,769.20 and 680,613.60 is: 1,020,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,469.60 : 1,965,769.20 = 680,613.60 : x
  2. Step 2: Convert to fraction form
    1,310,469.60/1,965,769.20 = 680,613.60/x
  3. Step 3: Cross multiply
    1,310,469.60x = 1,965,769.20 × 680,613.60
  4. Step 4: Simplify right side
    1,310,469.60x = 1,337,929,251,981.12
  5. Step 5: Solve for x
    x = 1,337,929,251,981.12/1,310,469.60
  6. Step 6: Final answer
    x = 1,020,954.05

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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.