Home / 627,121.12-865,095.40-397,272.88

Finding the Fourth Proportional to 627,121.12, 865,095.40 and 397,272.88

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Solution

The fourth proportional to 627,121.12, 865,095.40 and 397,272.88 is: 548,026.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,121.12 : 865,095.40 = 397,272.88 : x
  2. Step 2: Convert to fraction form
    627,121.12/865,095.40 = 397,272.88/x
  3. Step 3: Cross multiply
    627,121.12x = 865,095.40 × 397,272.88
  4. Step 4: Simplify right side
    627,121.12x = 343,678,941,032.75
  5. Step 5: Solve for x
    x = 343,678,941,032.75/627,121.12
  6. Step 6: Final answer
    x = 548,026.42

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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.