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Finding the Fourth Proportional to 627,975, 866,683.98 and 359,703

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Solution

The fourth proportional to 627,975, 866,683.98 and 359,703 is: 496,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,975 : 866,683.98 = 359,703 : x
  2. Step 2: Convert to fraction form
    627,975/866,683.98 = 359,703/x
  3. Step 3: Cross multiply
    627,975x = 866,683.98 × 359,703
  4. Step 4: Simplify right side
    627,975x = 311,748,827,657.94
  5. Step 5: Solve for x
    x = 311,748,827,657.94/627,975
  6. Step 6: Final answer
    x = 496,435.09

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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.