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Finding the Fourth Proportional to 1,432,976.28, 1,976,387.90 and 888,806.94

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Solution

The fourth proportional to 1,432,976.28, 1,976,387.90 and 888,806.94 is: 1,225,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,976.28 : 1,976,387.90 = 888,806.94 : x
  2. Step 2: Convert to fraction form
    1,432,976.28/1,976,387.90 = 888,806.94/x
  3. Step 3: Cross multiply
    1,432,976.28x = 1,976,387.90 × 888,806.94
  4. Step 4: Simplify right side
    1,432,976.28x = 1,756,627,277,207.99
  5. Step 5: Solve for x
    x = 1,756,627,277,207.99/1,432,976.28
  6. Step 6: Final answer
    x = 1,225,859.28

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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.