Home / 534,824.10-738,077.76-305,418.78

Finding the Fourth Proportional to 534,824.10, 738,077.76 and 305,418.78

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Solution

The fourth proportional to 534,824.10, 738,077.76 and 305,418.78 is: 421,489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,824.10 : 738,077.76 = 305,418.78 : x
  2. Step 2: Convert to fraction form
    534,824.10/738,077.76 = 305,418.78/x
  3. Step 3: Cross multiply
    534,824.10x = 738,077.76 × 305,418.78
  4. Step 4: Simplify right side
    534,824.10x = 225,422,809,004.33
  5. Step 5: Solve for x
    x = 225,422,809,004.33/534,824.10
  6. Step 6: Final answer
    x = 421,489.62

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1.5x scale

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.