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Finding the Fourth Proportional to 908,211, 1,253,370.06 and 505,803

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Solution

The fourth proportional to 908,211, 1,253,370.06 and 505,803 is: 698,029.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,211 : 1,253,370.06 = 505,803 : x
  2. Step 2: Convert to fraction form
    908,211/1,253,370.06 = 505,803/x
  3. Step 3: Cross multiply
    908,211x = 1,253,370.06 × 505,803
  4. Step 4: Simplify right side
    908,211x = 633,958,336,458.18
  5. Step 5: Solve for x
    x = 633,958,336,458.18/908,211
  6. Step 6: Final answer
    x = 698,029.79

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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.