Home / 823,419.80-1,235,129.70-815,546.60

Finding the Fourth Proportional to 823,419.80, 1,235,129.70 and 815,546.60

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Solution

The fourth proportional to 823,419.80, 1,235,129.70 and 815,546.60 is: 1,223,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,419.80 : 1,235,129.70 = 815,546.60 : x
  2. Step 2: Convert to fraction form
    823,419.80/1,235,129.70 = 815,546.60/x
  3. Step 3: Cross multiply
    823,419.80x = 1,235,129.70 × 815,546.60
  4. Step 4: Simplify right side
    823,419.80x = 1,007,305,827,394.02
  5. Step 5: Solve for x
    x = 1,007,305,827,394.02/823,419.80
  6. Step 6: Final answer
    x = 1,223,319.90

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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.