Home / 868,414.40-1,302,621.60-513,828.80

Finding the Fourth Proportional to 868,414.40, 1,302,621.60 and 513,828.80

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Solution

The fourth proportional to 868,414.40, 1,302,621.60 and 513,828.80 is: 770,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,414.40 : 1,302,621.60 = 513,828.80 : x
  2. Step 2: Convert to fraction form
    868,414.40/1,302,621.60 = 513,828.80/x
  3. Step 3: Cross multiply
    868,414.40x = 1,302,621.60 × 513,828.80
  4. Step 4: Simplify right side
    868,414.40x = 669,324,493,582.08
  5. Step 5: Solve for x
    x = 669,324,493,582.08/868,414.40
  6. Step 6: Final answer
    x = 770,743.20

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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.