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Finding the Fourth Proportional to 408,692.34, 613,126.75 and 124,405.12

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Solution

The fourth proportional to 408,692.34, 613,126.75 and 124,405.12 is: 186,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,692.34 : 613,126.75 = 124,405.12 : x
  2. Step 2: Convert to fraction form
    408,692.34/613,126.75 = 124,405.12/x
  3. Step 3: Cross multiply
    408,692.34x = 613,126.75 × 124,405.12
  4. Step 4: Simplify right side
    408,692.34x = 76,276,106,908.96
  5. Step 5: Solve for x
    x = 76,276,106,908.96/408,692.34
  6. Step 6: Final answer
    x = 186,634.54

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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.