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Finding the Fourth Proportional to 587,243.31, 810,357.41 and 345,479.18

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Solution

The fourth proportional to 587,243.31, 810,357.41 and 345,479.18 is: 476,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,243.31 : 810,357.41 = 345,479.18 : x
  2. Step 2: Convert to fraction form
    587,243.31/810,357.41 = 345,479.18/x
  3. Step 3: Cross multiply
    587,243.31x = 810,357.41 × 345,479.18
  4. Step 4: Simplify right side
    587,243.31x = 279,961,607,734.54
  5. Step 5: Solve for x
    x = 279,961,607,734.54/587,243.31
  6. Step 6: Final answer
    x = 476,738.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.