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Finding the Fourth Proportional to 627,361.20, 865,763.74 and 340,881.30

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Solution

The fourth proportional to 627,361.20, 865,763.74 and 340,881.30 is: 470,419.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,361.20 : 865,763.74 = 340,881.30 : x
  2. Step 2: Convert to fraction form
    627,361.20/865,763.74 = 340,881.30/x
  3. Step 3: Cross multiply
    627,361.20x = 865,763.74 × 340,881.30
  4. Step 4: Simplify right side
    627,361.20x = 295,122,669,184.06
  5. Step 5: Solve for x
    x = 295,122,669,184.06/627,361.20
  6. Step 6: Final answer
    x = 470,419.07

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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.