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Finding the Fourth Proportional to 704,796.45, 972,618.71 and 398,867.27

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Solution

The fourth proportional to 704,796.45, 972,618.71 and 398,867.27 is: 550,436.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,796.45 : 972,618.71 = 398,867.27 : x
  2. Step 2: Convert to fraction form
    704,796.45/972,618.71 = 398,867.27/x
  3. Step 3: Cross multiply
    704,796.45x = 972,618.71 × 398,867.27
  4. Step 4: Simplify right side
    704,796.45x = 387,945,767,614.29
  5. Step 5: Solve for x
    x = 387,945,767,614.29/704,796.45
  6. Step 6: Final answer
    x = 550,436.61

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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.