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Finding the Fourth Proportional to 627,680.72, 866,239.65 and 352,064.45

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Solution

The fourth proportional to 627,680.72, 866,239.65 and 352,064.45 is: 485,871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,680.72 : 866,239.65 = 352,064.45 : x
  2. Step 2: Convert to fraction form
    627,680.72/866,239.65 = 352,064.45/x
  3. Step 3: Cross multiply
    627,680.72x = 866,239.65 × 352,064.45
  4. Step 4: Simplify right side
    627,680.72x = 304,972,181,614.24
  5. Step 5: Solve for x
    x = 304,972,181,614.24/627,680.72
  6. Step 6: Final answer
    x = 485,871.52

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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.