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Finding the Fourth Proportional to 627,590.60, 866,093.28 and 355,649.45

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Solution

The fourth proportional to 627,590.60, 866,093.28 and 355,649.45 is: 490,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,590.60 : 866,093.28 = 355,649.45 : x
  2. Step 2: Convert to fraction form
    627,590.60/866,093.28 = 355,649.45/x
  3. Step 3: Cross multiply
    627,590.60x = 866,093.28 × 355,649.45
  4. Step 4: Simplify right side
    627,590.60x = 308,025,594,350.23
  5. Step 5: Solve for x
    x = 308,025,594,350.23/627,590.60
  6. Step 6: Final answer
    x = 490,806.58

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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.