Home / 814,999.70-1,222,499.55-515,818.10

Finding the Fourth Proportional to 814,999.70, 1,222,499.55 and 515,818.10

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Solution

The fourth proportional to 814,999.70, 1,222,499.55 and 515,818.10 is: 773,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,999.70 : 1,222,499.55 = 515,818.10 : x
  2. Step 2: Convert to fraction form
    814,999.70/1,222,499.55 = 515,818.10/x
  3. Step 3: Cross multiply
    814,999.70x = 1,222,499.55 × 515,818.10
  4. Step 4: Simplify right side
    814,999.70x = 630,587,395,131.86
  5. Step 5: Solve for x
    x = 630,587,395,131.86/814,999.70
  6. Step 6: Final answer
    x = 773,727.15

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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.