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Finding the Fourth Proportional to 908,220, 1,253,382.48 and 505,812

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Solution

The fourth proportional to 908,220, 1,253,382.48 and 505,812 is: 698,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,220 : 1,253,382.48 = 505,812 : x
  2. Step 2: Convert to fraction form
    908,220/1,253,382.48 = 505,812/x
  3. Step 3: Cross multiply
    908,220x = 1,253,382.48 × 505,812
  4. Step 4: Simplify right side
    908,220x = 633,975,898,973.76
  5. Step 5: Solve for x
    x = 633,975,898,973.76/908,220
  6. Step 6: Final answer
    x = 698,042.21

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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.