Home / 403,943.80-605,624.10-263,781.40

Finding the Fourth Proportional to 403,943.80, 605,624.10 and 263,781.40

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Solution

The fourth proportional to 403,943.80, 605,624.10 and 263,781.40 is: 395,481.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,943.80 : 605,624.10 = 263,781.40 : x
  2. Step 2: Convert to fraction form
    403,943.80/605,624.10 = 263,781.40/x
  3. Step 3: Cross multiply
    403,943.80x = 605,624.10 × 263,781.40
  4. Step 4: Simplify right side
    403,943.80x = 159,752,372,971.74
  5. Step 5: Solve for x
    x = 159,752,372,971.74/403,943.80
  6. Step 6: Final answer
    x = 395,481.68

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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.