Home / 815,965.13-1,223,947.47-254,999.63

Finding the Fourth Proportional to 815,965.13, 1,223,947.47 and 254,999.63

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Solution

The fourth proportional to 815,965.13, 1,223,947.47 and 254,999.63 is: 382,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,965.13 : 1,223,947.47 = 254,999.63 : x
  2. Step 2: Convert to fraction form
    815,965.13/1,223,947.47 = 254,999.63/x
  3. Step 3: Cross multiply
    815,965.13x = 1,223,947.47 × 254,999.63
  4. Step 4: Simplify right side
    815,965.13x = 312,106,151,989.44
  5. Step 5: Solve for x
    x = 312,106,151,989.44/815,965.13
  6. Step 6: Final answer
    x = 382,499.37

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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.