Home / 815,633.40-1,223,450.10-685,725.60

Finding the Fourth Proportional to 815,633.40, 1,223,450.10 and 685,725.60

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Solution

The fourth proportional to 815,633.40, 1,223,450.10 and 685,725.60 is: 1,028,588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,633.40 : 1,223,450.10 = 685,725.60 : x
  2. Step 2: Convert to fraction form
    815,633.40/1,223,450.10 = 685,725.60/x
  3. Step 3: Cross multiply
    815,633.40x = 1,223,450.10 × 685,725.60
  4. Step 4: Simplify right side
    815,633.40x = 838,951,053,892.56
  5. Step 5: Solve for x
    x = 838,951,053,892.56/815,633.40
  6. Step 6: Final answer
    x = 1,028,588.40

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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.