Home / 627,015.69-865,291.59-355,076.21

Finding the Fourth Proportional to 627,015.69, 865,291.59 and 355,076.21

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Solution

The fourth proportional to 627,015.69, 865,291.59 and 355,076.21 is: 490,010.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,015.69 : 865,291.59 = 355,076.21 : x
  2. Step 2: Convert to fraction form
    627,015.69/865,291.59 = 355,076.21/x
  3. Step 3: Cross multiply
    627,015.69x = 865,291.59 × 355,076.21
  4. Step 4: Simplify right side
    627,015.69x = 307,244,453,995.62
  5. Step 5: Solve for x
    x = 307,244,453,995.62/627,015.69
  6. Step 6: Final answer
    x = 490,010.79

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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.