Home / 1,345,320.80-2,016,976.80-812,729.60

Finding the Fourth Proportional to 1,345,320.80, 2,016,976.80 and 812,729.60

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Solution

The fourth proportional to 1,345,320.80, 2,016,976.80 and 812,729.60 is: 1,218,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,320.80 : 2,016,976.80 = 812,729.60 : x
  2. Step 2: Convert to fraction form
    1,345,320.80/2,016,976.80 = 812,729.60/x
  3. Step 3: Cross multiply
    1,345,320.80x = 2,016,976.80 × 812,729.60
  4. Step 4: Simplify right side
    1,345,320.80x = 1,639,256,747,873.28
  5. Step 5: Solve for x
    x = 1,639,256,747,873.28/1,345,320.80
  6. Step 6: Final answer
    x = 1,218,487.63

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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.