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Finding the Fourth Proportional to 876,099.72, 1,314,160.02 and 343,871.40

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Solution

The fourth proportional to 876,099.72, 1,314,160.02 and 343,871.40 is: 515,811.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,099.72 : 1,314,160.02 = 343,871.40 : x
  2. Step 2: Convert to fraction form
    876,099.72/1,314,160.02 = 343,871.40/x
  3. Step 3: Cross multiply
    876,099.72x = 1,314,160.02 × 343,871.40
  4. Step 4: Simplify right side
    876,099.72x = 451,902,045,901.43
  5. Step 5: Solve for x
    x = 451,902,045,901.43/876,099.72
  6. Step 6: Final answer
    x = 515,811.20

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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.