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Finding the Fourth Proportional to 908,190, 1,253,341.08 and 505,782

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Solution

The fourth proportional to 908,190, 1,253,341.08 and 505,782 is: 698,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,190 : 1,253,341.08 = 505,782 : x
  2. Step 2: Convert to fraction form
    908,190/1,253,341.08 = 505,782/x
  3. Step 3: Cross multiply
    908,190x = 1,253,341.08 × 505,782
  4. Step 4: Simplify right side
    908,190x = 633,917,358,124.56
  5. Step 5: Solve for x
    x = 633,917,358,124.56/908,190
  6. Step 6: Final answer
    x = 698,000.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.