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Finding the Fourth Proportional to 1,207,887, 1,812,420.96 and 855,167.64

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Solution

The fourth proportional to 1,207,887, 1,812,420.96 and 855,167.64 is: 1,283,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,887 : 1,812,420.96 = 855,167.64 : x
  2. Step 2: Convert to fraction form
    1,207,887/1,812,420.96 = 855,167.64/x
  3. Step 3: Cross multiply
    1,207,887x = 1,812,420.96 × 855,167.64
  4. Step 4: Simplify right side
    1,207,887x = 1,549,923,755,049.73
  5. Step 5: Solve for x
    x = 1,549,923,755,049.73/1,207,887
  6. Step 6: Final answer
    x = 1,283,169.50

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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.