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Finding the Fourth Proportional to 908,226, 1,253,390.76 and 505,818

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Solution

The fourth proportional to 908,226, 1,253,390.76 and 505,818 is: 698,050.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,226 : 1,253,390.76 = 505,818 : x
  2. Step 2: Convert to fraction form
    908,226/1,253,390.76 = 505,818/x
  3. Step 3: Cross multiply
    908,226x = 1,253,390.76 × 505,818
  4. Step 4: Simplify right side
    908,226x = 633,987,607,441.68
  5. Step 5: Solve for x
    x = 633,987,607,441.68/908,226
  6. Step 6: Final answer
    x = 698,050.49

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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.