Home / 819,201.02-1,229,043.48-420,121.37

Finding the Fourth Proportional to 819,201.02, 1,229,043.48 and 420,121.37

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Solution

The fourth proportional to 819,201.02, 1,229,043.48 and 420,121.37 is: 630,306.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,201.02 : 1,229,043.48 = 420,121.37 : x
  2. Step 2: Convert to fraction form
    819,201.02/1,229,043.48 = 420,121.37/x
  3. Step 3: Cross multiply
    819,201.02x = 1,229,043.48 × 420,121.37
  4. Step 4: Simplify right side
    819,201.02x = 516,347,430,607.17
  5. Step 5: Solve for x
    x = 516,347,430,607.17/819,201.02
  6. Step 6: Final answer
    x = 630,306.14

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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.