Home / 1,107,703.86-1,528,753.57-642,660.18

Finding the Fourth Proportional to 1,107,703.86, 1,528,753.57 and 642,660.18

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Solution

The fourth proportional to 1,107,703.86, 1,528,753.57 and 642,660.18 is: 886,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,703.86 : 1,528,753.57 = 642,660.18 : x
  2. Step 2: Convert to fraction form
    1,107,703.86/1,528,753.57 = 642,660.18/x
  3. Step 3: Cross multiply
    1,107,703.86x = 1,528,753.57 × 642,660.18
  4. Step 4: Simplify right side
    1,107,703.86x = 982,469,042,865.19
  5. Step 5: Solve for x
    x = 982,469,042,865.19/1,107,703.86
  6. Step 6: Final answer
    x = 886,941.97

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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.