Home / 1,345,322.80-2,016,979.80-812,731.60

Finding the Fourth Proportional to 1,345,322.80, 2,016,979.80 and 812,731.60

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Solution

The fourth proportional to 1,345,322.80, 2,016,979.80 and 812,731.60 is: 1,218,490.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,322.80 : 2,016,979.80 = 812,731.60 : x
  2. Step 2: Convert to fraction form
    1,345,322.80/2,016,979.80 = 812,731.60/x
  3. Step 3: Cross multiply
    1,345,322.80x = 2,016,979.80 × 812,731.60
  4. Step 4: Simplify right side
    1,345,322.80x = 1,639,263,220,021.68
  5. Step 5: Solve for x
    x = 1,639,263,220,021.68/1,345,322.80
  6. Step 6: Final answer
    x = 1,218,490.63

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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.