Home / 2,811,234.63-4,216,851.89-681,318.78

Finding the Fourth Proportional to 2,811,234.63, 4,216,851.89 and 681,318.78

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Solution

The fourth proportional to 2,811,234.63, 4,216,851.89 and 681,318.78 is: 1,021,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811,234.63 : 4,216,851.89 = 681,318.78 : x
  2. Step 2: Convert to fraction form
    2,811,234.63/4,216,851.89 = 681,318.78/x
  3. Step 3: Cross multiply
    2,811,234.63x = 4,216,851.89 × 681,318.78
  4. Step 4: Simplify right side
    2,811,234.63x = 2,873,020,385,135.49
  5. Step 5: Solve for x
    x = 2,873,020,385,135.49/2,811,234.63
  6. Step 6: Final answer
    x = 1,021,978.16

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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.