Home / 1,247,982.72-1,723,265.96-789,905.40

Finding the Fourth Proportional to 1,247,982.72, 1,723,265.96 and 789,905.40

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Solution

The fourth proportional to 1,247,982.72, 1,723,265.96 and 789,905.40 is: 1,090,733.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,982.72 : 1,723,265.96 = 789,905.40 : x
  2. Step 2: Convert to fraction form
    1,247,982.72/1,723,265.96 = 789,905.40/x
  3. Step 3: Cross multiply
    1,247,982.72x = 1,723,265.96 × 789,905.40
  4. Step 4: Simplify right side
    1,247,982.72x = 1,361,217,087,440.18
  5. Step 5: Solve for x
    x = 1,361,217,087,440.18/1,247,982.72
  6. Step 6: Final answer
    x = 1,090,733.92

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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.