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Finding the Fourth Proportional to 553,982.31, 830,677.82 and 287,474.49

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Solution

The fourth proportional to 553,982.31, 830,677.82 and 287,474.49 is: 431,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,982.31 : 830,677.82 = 287,474.49 : x
  2. Step 2: Convert to fraction form
    553,982.31/830,677.82 = 287,474.49/x
  3. Step 3: Cross multiply
    553,982.31x = 830,677.82 × 287,474.49
  4. Step 4: Simplify right side
    553,982.31x = 238,798,681,221.44
  5. Step 5: Solve for x
    x = 238,798,681,221.44/553,982.31
  6. Step 6: Final answer
    x = 431,058.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.