Home / 627,120.88-865,442.83-355,184.75

Finding the Fourth Proportional to 627,120.88, 865,442.83 and 355,184.75

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Solution

The fourth proportional to 627,120.88, 865,442.83 and 355,184.75 is: 490,164.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,120.88 : 865,442.83 = 355,184.75 : x
  2. Step 2: Convert to fraction form
    627,120.88/865,442.83 = 355,184.75/x
  3. Step 3: Cross multiply
    627,120.88x = 865,442.83 × 355,184.75
  4. Step 4: Simplify right side
    627,120.88x = 307,392,092,286.34
  5. Step 5: Solve for x
    x = 307,392,092,286.34/627,120.88
  6. Step 6: Final answer
    x = 490,164.02

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1.5x scale

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.