Home / 1,191,976.28-1,785,999.11-686,961.72

Finding the Fourth Proportional to 1,191,976.28, 1,785,999.11 and 686,961.72

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Solution

The fourth proportional to 1,191,976.28, 1,785,999.11 and 686,961.72 is: 1,029,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,976.28 : 1,785,999.11 = 686,961.72 : x
  2. Step 2: Convert to fraction form
    1,191,976.28/1,785,999.11 = 686,961.72/x
  3. Step 3: Cross multiply
    1,191,976.28x = 1,785,999.11 × 686,961.72
  4. Step 4: Simplify right side
    1,191,976.28x = 1,226,913,017,089.26
  5. Step 5: Solve for x
    x = 1,226,913,017,089.26/1,191,976.28
  6. Step 6: Final answer
    x = 1,029,309.93

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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.