Home / 801,285.96-1,105,732.62-438,640.39

Finding the Fourth Proportional to 801,285.96, 1,105,732.62 and 438,640.39

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Solution

The fourth proportional to 801,285.96, 1,105,732.62 and 438,640.39 is: 605,300.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,285.96 : 1,105,732.62 = 438,640.39 : x
  2. Step 2: Convert to fraction form
    801,285.96/1,105,732.62 = 438,640.39/x
  3. Step 3: Cross multiply
    801,285.96x = 1,105,732.62 × 438,640.39
  4. Step 4: Simplify right side
    801,285.96x = 485,018,987,672.52
  5. Step 5: Solve for x
    x = 485,018,987,672.52/801,285.96
  6. Step 6: Final answer
    x = 605,300.74

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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.