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Finding the Fourth Proportional to 908,308.64, 1,253,449.68 and 505,892

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Solution

The fourth proportional to 908,308.64, 1,253,449.68 and 505,892 is: 698,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,308.64 : 1,253,449.68 = 505,892 : x
  2. Step 2: Convert to fraction form
    908,308.64/1,253,449.68 = 505,892/x
  3. Step 3: Cross multiply
    908,308.64x = 1,253,449.68 × 505,892
  4. Step 4: Simplify right side
    908,308.64x = 634,110,165,514.56
  5. Step 5: Solve for x
    x = 634,110,165,514.56/908,308.64
  6. Step 6: Final answer
    x = 698,121.91

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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.