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Finding the Fourth Proportional to 658,626.36, 908,908.74 and 356,820.36

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Solution

The fourth proportional to 658,626.36, 908,908.74 and 356,820.36 is: 492,414.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,626.36 : 908,908.74 = 356,820.36 : x
  2. Step 2: Convert to fraction form
    658,626.36/908,908.74 = 356,820.36/x
  3. Step 3: Cross multiply
    658,626.36x = 908,908.74 × 356,820.36
  4. Step 4: Simplify right side
    658,626.36x = 324,317,143,813.95
  5. Step 5: Solve for x
    x = 324,317,143,813.95/658,626.36
  6. Step 6: Final answer
    x = 492,414.46

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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.