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Finding the Fourth Proportional to 627,989.49, 866,698.38 and 352,423.17

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Solution

The fourth proportional to 627,989.49, 866,698.38 and 352,423.17 is: 486,384.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,989.49 : 866,698.38 = 352,423.17 : x
  2. Step 2: Convert to fraction form
    627,989.49/866,698.38 = 352,423.17/x
  3. Step 3: Cross multiply
    627,989.49x = 866,698.38 × 352,423.17
  4. Step 4: Simplify right side
    627,989.49x = 305,444,590,513.47
  5. Step 5: Solve for x
    x = 305,444,590,513.47/627,989.49
  6. Step 6: Final answer
    x = 486,384.88

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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.