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Finding the Fourth Proportional to 1,805,769.77, 2,491,908.35 and 989,945.57

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Solution

The fourth proportional to 1,805,769.77, 2,491,908.35 and 989,945.57 is: 1,366,095.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805,769.77 : 2,491,908.35 = 989,945.57 : x
  2. Step 2: Convert to fraction form
    1,805,769.77/2,491,908.35 = 989,945.57/x
  3. Step 3: Cross multiply
    1,805,769.77x = 2,491,908.35 × 989,945.57
  4. Step 4: Simplify right side
    1,805,769.77x = 2,466,853,614,519.24
  5. Step 5: Solve for x
    x = 2,466,853,614,519.24/1,805,769.77
  6. Step 6: Final answer
    x = 1,366,095.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.