Home / 812,354,992.86-1,218,472,888.98-259,508,982.03

Finding the Fourth Proportional to 812,354,992.86, 1,218,472,888.98 and 259,508,982.03

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Solution

The fourth proportional to 812,354,992.86, 1,218,472,888.98 and 259,508,982.03 is: 389,244,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,354,992.86 : 1,218,472,888.98 = 259,508,982.03 : x
  2. Step 2: Convert to fraction form
    812,354,992.86/1,218,472,888.98 = 259,508,982.03/x
  3. Step 3: Cross multiply
    812,354,992.86x = 1,218,472,888.98 × 259,508,982.03
  4. Step 4: Simplify right side
    812,354,992.86x = 316,204,659,050,353,024
  5. Step 5: Solve for x
    x = 316,204,659,050,353,024/812,354,992.86
  6. Step 6: Final answer
    x = 389,244,433.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.