Home / 810,162.11-1,117,989.67-465,972.05

Finding the Fourth Proportional to 810,162.11, 1,117,989.67 and 465,972.05

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Solution

The fourth proportional to 810,162.11, 1,117,989.67 and 465,972.05 is: 643,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,162.11 : 1,117,989.67 = 465,972.05 : x
  2. Step 2: Convert to fraction form
    810,162.11/1,117,989.67 = 465,972.05/x
  3. Step 3: Cross multiply
    810,162.11x = 1,117,989.67 × 465,972.05
  4. Step 4: Simplify right side
    810,162.11x = 520,951,936,078.86
  5. Step 5: Solve for x
    x = 520,951,936,078.86/810,162.11
  6. Step 6: Final answer
    x = 643,021.85

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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.