Home / 687,321.60-1,030,999.68-266,691.84

Finding the Fourth Proportional to 687,321.60, 1,030,999.68 and 266,691.84

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Solution

The fourth proportional to 687,321.60, 1,030,999.68 and 266,691.84 is: 400,044.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,321.60 : 1,030,999.68 = 266,691.84 : x
  2. Step 2: Convert to fraction form
    687,321.60/1,030,999.68 = 266,691.84/x
  3. Step 3: Cross multiply
    687,321.60x = 1,030,999.68 × 266,691.84
  4. Step 4: Simplify right side
    687,321.60x = 274,959,201,698.61
  5. Step 5: Solve for x
    x = 274,959,201,698.61/687,321.60
  6. Step 6: Final answer
    x = 400,044.46

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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.