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Finding the Fourth Proportional to 1,787,877.09, 2,678,866.36 and 1,030,354.97

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Solution

The fourth proportional to 1,787,877.09, 2,678,866.36 and 1,030,354.97 is: 1,543,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,877.09 : 2,678,866.36 = 1,030,354.97 : x
  2. Step 2: Convert to fraction form
    1,787,877.09/2,678,866.36 = 1,030,354.97/x
  3. Step 3: Cross multiply
    1,787,877.09x = 2,678,866.36 × 1,030,354.97
  4. Step 4: Simplify right side
    1,787,877.09x = 2,760,183,252,021.59
  5. Step 5: Solve for x
    x = 2,760,183,252,021.59/1,787,877.09
  6. Step 6: Final answer
    x = 1,543,832.78

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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.