Home / 927,708.80-1,388,452.80-815,734.40

Finding the Fourth Proportional to 927,708.80, 1,388,452.80 and 815,734.40

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Solution

The fourth proportional to 927,708.80, 1,388,452.80 and 815,734.40 is: 1,220,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,708.80 : 1,388,452.80 = 815,734.40 : x
  2. Step 2: Convert to fraction form
    927,708.80/1,388,452.80 = 815,734.40/x
  3. Step 3: Cross multiply
    927,708.80x = 1,388,452.80 × 815,734.40
  4. Step 4: Simplify right side
    927,708.80x = 1,132,608,711,736.32
  5. Step 5: Solve for x
    x = 1,132,608,711,736.32/927,708.80
  6. Step 6: Final answer
    x = 1,220,866.63

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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.