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Finding the Fourth Proportional to 403,963.40, 605,945.10 and 341,755.40

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Solution

The fourth proportional to 403,963.40, 605,945.10 and 341,755.40 is: 512,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,963.40 : 605,945.10 = 341,755.40 : x
  2. Step 2: Convert to fraction form
    403,963.40/605,945.10 = 341,755.40/x
  3. Step 3: Cross multiply
    403,963.40x = 605,945.10 × 341,755.40
  4. Step 4: Simplify right side
    403,963.40x = 207,085,010,028.54
  5. Step 5: Solve for x
    x = 207,085,010,028.54/403,963.40
  6. Step 6: Final answer
    x = 512,633.10

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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.