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Finding the Fourth Proportional to 627,467.87, 865,911.20 and 340,987.98

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Solution

The fourth proportional to 627,467.87, 865,911.20 and 340,987.98 is: 470,566.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,467.87 : 865,911.20 = 340,987.98 : x
  2. Step 2: Convert to fraction form
    627,467.87/865,911.20 = 340,987.98/x
  3. Step 3: Cross multiply
    627,467.87x = 865,911.20 × 340,987.98
  4. Step 4: Simplify right side
    627,467.87x = 295,265,307,470.29
  5. Step 5: Solve for x
    x = 295,265,307,470.29/627,467.87
  6. Step 6: Final answer
    x = 470,566.42

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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.