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Finding the Fourth Proportional to 627,451.50, 865,883.21 and 340,970.91

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Solution

The fourth proportional to 627,451.50, 865,883.21 and 340,970.91 is: 470,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,451.50 : 865,883.21 = 340,970.91 : x
  2. Step 2: Convert to fraction form
    627,451.50/865,883.21 = 340,970.91/x
  3. Step 3: Cross multiply
    627,451.50x = 865,883.21 × 340,970.91
  4. Step 4: Simplify right side
    627,451.50x = 295,240,986,067.42
  5. Step 5: Solve for x
    x = 295,240,986,067.42/627,451.50
  6. Step 6: Final answer
    x = 470,539.93

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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.