Home / 627,308.60-865,657.66-355,370.95

Finding the Fourth Proportional to 627,308.60, 865,657.66 and 355,370.95

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Solution

The fourth proportional to 627,308.60, 865,657.66 and 355,370.95 is: 490,395.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,308.60 : 865,657.66 = 355,370.95 : x
  2. Step 2: Convert to fraction form
    627,308.60/865,657.66 = 355,370.95/x
  3. Step 3: Cross multiply
    627,308.60x = 865,657.66 × 355,370.95
  4. Step 4: Simplify right side
    627,308.60x = 307,629,580,000.14
  5. Step 5: Solve for x
    x = 307,629,580,000.14/627,308.60
  6. Step 6: Final answer
    x = 490,395.92

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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.