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Finding the Fourth Proportional to 874,212.82, 1,310,987.03 and 418,336.11

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Solution

The fourth proportional to 874,212.82, 1,310,987.03 and 418,336.11 is: 627,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,212.82 : 1,310,987.03 = 418,336.11 : x
  2. Step 2: Convert to fraction form
    874,212.82/1,310,987.03 = 418,336.11/x
  3. Step 3: Cross multiply
    874,212.82x = 1,310,987.03 × 418,336.11
  4. Step 4: Simplify right side
    874,212.82x = 548,433,212,298.97
  5. Step 5: Solve for x
    x = 548,433,212,298.97/874,212.82
  6. Step 6: Final answer
    x = 627,345.20

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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.