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Finding the Fourth Proportional to 801,448.32, 1,105,978.92 and 438,887.52

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Solution

The fourth proportional to 801,448.32, 1,105,978.92 and 438,887.52 is: 605,653.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,448.32 : 1,105,978.92 = 438,887.52 : x
  2. Step 2: Convert to fraction form
    801,448.32/1,105,978.92 = 438,887.52/x
  3. Step 3: Cross multiply
    801,448.32x = 1,105,978.92 × 438,887.52
  4. Step 4: Simplify right side
    801,448.32x = 485,400,345,371.08
  5. Step 5: Solve for x
    x = 485,400,345,371.08/801,448.32
  6. Step 6: Final answer
    x = 605,653.96

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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.