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Finding the Fourth Proportional to 704,801.92, 972,626.25 and 398,872.75

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Solution

The fourth proportional to 704,801.92, 972,626.25 and 398,872.75 is: 550,444.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,801.92 : 972,626.25 = 398,872.75 : x
  2. Step 2: Convert to fraction form
    704,801.92/972,626.25 = 398,872.75/x
  3. Step 3: Cross multiply
    704,801.92x = 972,626.25 × 398,872.75
  4. Step 4: Simplify right side
    704,801.92x = 387,954,107,059.69
  5. Step 5: Solve for x
    x = 387,954,107,059.69/704,801.92
  6. Step 6: Final answer
    x = 550,444.17

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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.