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Finding the Fourth Proportional to 1,805,769.27, 2,491,907.65 and 989,945.07

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Solution

The fourth proportional to 1,805,769.27, 2,491,907.65 and 989,945.07 is: 1,366,094.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805,769.27 : 2,491,907.65 = 989,945.07 : x
  2. Step 2: Convert to fraction form
    1,805,769.27/2,491,907.65 = 989,945.07/x
  3. Step 3: Cross multiply
    1,805,769.27x = 2,491,907.65 × 989,945.07
  4. Step 4: Simplify right side
    1,805,769.27x = 2,466,851,693,012.79
  5. Step 5: Solve for x
    x = 2,466,851,693,012.79/1,805,769.27
  6. Step 6: Final answer
    x = 1,366,094.62

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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.