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Finding the Fourth Proportional to 627,720.70, 866,244.36 and 341,248

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Solution

The fourth proportional to 627,720.70, 866,244.36 and 341,248 is: 470,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,720.70 : 866,244.36 = 341,248 : x
  2. Step 2: Convert to fraction form
    627,720.70/866,244.36 = 341,248/x
  3. Step 3: Cross multiply
    627,720.70x = 866,244.36 × 341,248
  4. Step 4: Simplify right side
    627,720.70x = 295,604,155,361.28
  5. Step 5: Solve for x
    x = 295,604,155,361.28/627,720.70
  6. Step 6: Final answer
    x = 470,916.69

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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.