Home / 815,555.76-1,223,333.64-254,638.32

Finding the Fourth Proportional to 815,555.76, 1,223,333.64 and 254,638.32

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Solution

The fourth proportional to 815,555.76, 1,223,333.64 and 254,638.32 is: 381,957.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,555.76 : 1,223,333.64 = 254,638.32 : x
  2. Step 2: Convert to fraction form
    815,555.76/1,223,333.64 = 254,638.32/x
  3. Step 3: Cross multiply
    815,555.76x = 1,223,333.64 × 254,638.32
  4. Step 4: Simplify right side
    815,555.76x = 311,507,622,889.09
  5. Step 5: Solve for x
    x = 311,507,622,889.09/815,555.76
  6. Step 6: Final answer
    x = 381,957.48

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Similar ratio
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1.5x scale

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.