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Finding the Fourth Proportional to 403,610.90, 605,416.35 and 360,065.30

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Solution

The fourth proportional to 403,610.90, 605,416.35 and 360,065.30 is: 540,097.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,610.90 : 605,416.35 = 360,065.30 : x
  2. Step 2: Convert to fraction form
    403,610.90/605,416.35 = 360,065.30/x
  3. Step 3: Cross multiply
    403,610.90x = 605,416.35 × 360,065.30
  4. Step 4: Simplify right side
    403,610.90x = 217,989,419,687.66
  5. Step 5: Solve for x
    x = 217,989,419,687.66/403,610.90
  6. Step 6: Final answer
    x = 540,097.95

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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.