Home / 915,428.33-1,372,181.28-308,005.78

Finding the Fourth Proportional to 915,428.33, 1,372,181.28 and 308,005.78

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Solution

The fourth proportional to 915,428.33, 1,372,181.28 and 308,005.78 is: 461,685.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,428.33 : 1,372,181.28 = 308,005.78 : x
  2. Step 2: Convert to fraction form
    915,428.33/1,372,181.28 = 308,005.78/x
  3. Step 3: Cross multiply
    915,428.33x = 1,372,181.28 × 308,005.78
  4. Step 4: Simplify right side
    915,428.33x = 422,639,765,447.80
  5. Step 5: Solve for x
    x = 422,639,765,447.80/915,428.33
  6. Step 6: Final answer
    x = 461,685.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.