Home / 812,877.60-1,218,004.20-512,821.20

Finding the Fourth Proportional to 812,877.60, 1,218,004.20 and 512,821.20

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Solution

The fourth proportional to 812,877.60, 1,218,004.20 and 512,821.20 is: 768,403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,877.60 : 1,218,004.20 = 512,821.20 : x
  2. Step 2: Convert to fraction form
    812,877.60/1,218,004.20 = 512,821.20/x
  3. Step 3: Cross multiply
    812,877.60x = 1,218,004.20 × 512,821.20
  4. Step 4: Simplify right side
    812,877.60x = 624,618,375,449.04
  5. Step 5: Solve for x
    x = 624,618,375,449.04/812,877.60
  6. Step 6: Final answer
    x = 768,403.97

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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.