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Finding the Fourth Proportional to 627,978.68, 866,633.44 and 359,758.52

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Solution

The fourth proportional to 627,978.68, 866,633.44 and 359,758.52 is: 496,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,978.68 : 866,633.44 = 359,758.52 : x
  2. Step 2: Convert to fraction form
    627,978.68/866,633.44 = 359,758.52/x
  3. Step 3: Cross multiply
    627,978.68x = 866,633.44 × 359,758.52
  4. Step 4: Simplify right side
    627,978.68x = 311,778,763,756.91
  5. Step 5: Solve for x
    x = 311,778,763,756.91/627,978.68
  6. Step 6: Final answer
    x = 496,479.85

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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.