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Finding the Fourth Proportional to 627,707.36, 866,217.96 and 355,800.32

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Solution

The fourth proportional to 627,707.36, 866,217.96 and 355,800.32 is: 490,994.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,707.36 : 866,217.96 = 355,800.32 : x
  2. Step 2: Convert to fraction form
    627,707.36/866,217.96 = 355,800.32/x
  3. Step 3: Cross multiply
    627,707.36x = 866,217.96 × 355,800.32
  4. Step 4: Simplify right side
    627,707.36x = 308,200,627,357.75
  5. Step 5: Solve for x
    x = 308,200,627,357.75/627,707.36
  6. Step 6: Final answer
    x = 490,994.13

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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.