Home / 403,740.30-605,610.45-395,445.90

Finding the Fourth Proportional to 403,740.30, 605,610.45 and 395,445.90

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Solution

The fourth proportional to 403,740.30, 605,610.45 and 395,445.90 is: 593,168.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,740.30 : 605,610.45 = 395,445.90 : x
  2. Step 2: Convert to fraction form
    403,740.30/605,610.45 = 395,445.90/x
  3. Step 3: Cross multiply
    403,740.30x = 605,610.45 × 395,445.90
  4. Step 4: Simplify right side
    403,740.30x = 239,486,169,449.66
  5. Step 5: Solve for x
    x = 239,486,169,449.66/403,740.30
  6. Step 6: Final answer
    x = 593,168.85

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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.