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Finding the Fourth Proportional to 875,843.40, 1,314,110.70 and 343,273.80

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Solution

The fourth proportional to 875,843.40, 1,314,110.70 and 343,273.80 is: 515,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,843.40 : 1,314,110.70 = 343,273.80 : x
  2. Step 2: Convert to fraction form
    875,843.40/1,314,110.70 = 343,273.80/x
  3. Step 3: Cross multiply
    875,843.40x = 1,314,110.70 × 343,273.80
  4. Step 4: Simplify right side
    875,843.40x = 451,099,773,609.66
  5. Step 5: Solve for x
    x = 451,099,773,609.66/875,843.40
  6. Step 6: Final answer
    x = 515,046.15

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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.