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Finding the Fourth Proportional to 1,877,072.72, 2,815,609.03 and 865,895.50

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Solution

The fourth proportional to 1,877,072.72, 2,815,609.03 and 865,895.50 is: 1,298,843.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877,072.72 : 2,815,609.03 = 865,895.50 : x
  2. Step 2: Convert to fraction form
    1,877,072.72/2,815,609.03 = 865,895.50/x
  3. Step 3: Cross multiply
    1,877,072.72x = 2,815,609.03 × 865,895.50
  4. Step 4: Simplify right side
    1,877,072.72x = 2,438,023,188,836.36
  5. Step 5: Solve for x
    x = 2,438,023,188,836.36/1,877,072.72
  6. Step 6: Final answer
    x = 1,298,843.23

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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.