Home / 1,098,963.92-1,517,310.77-686,129.87

Finding the Fourth Proportional to 1,098,963.92, 1,517,310.77 and 686,129.87

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Solution

The fourth proportional to 1,098,963.92, 1,517,310.77 and 686,129.87 is: 947,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,963.92 : 1,517,310.77 = 686,129.87 : x
  2. Step 2: Convert to fraction form
    1,098,963.92/1,517,310.77 = 686,129.87/x
  3. Step 3: Cross multiply
    1,098,963.92x = 1,517,310.77 × 686,129.87
  4. Step 4: Simplify right side
    1,098,963.92x = 1,041,072,241,732.33
  5. Step 5: Solve for x
    x = 1,041,072,241,732.33/1,098,963.92
  6. Step 6: Final answer
    x = 947,321.58

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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.