Home / 627,009.50-865,326.47-355,125.75

Finding the Fourth Proportional to 627,009.50, 865,326.47 and 355,125.75

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Solution

The fourth proportional to 627,009.50, 865,326.47 and 355,125.75 is: 490,103.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,009.50 : 865,326.47 = 355,125.75 : x
  2. Step 2: Convert to fraction form
    627,009.50/865,326.47 = 355,125.75/x
  3. Step 3: Cross multiply
    627,009.50x = 865,326.47 × 355,125.75
  4. Step 4: Simplify right side
    627,009.50x = 307,299,709,877.97
  5. Step 5: Solve for x
    x = 307,299,709,877.97/627,009.50
  6. Step 6: Final answer
    x = 490,103.76

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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.