Home / 905,786.86-1,249,958.85-518,589.43

Finding the Fourth Proportional to 905,786.86, 1,249,958.85 and 518,589.43

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Solution

The fourth proportional to 905,786.86, 1,249,958.85 and 518,589.43 is: 715,637.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,786.86 : 1,249,958.85 = 518,589.43 : x
  2. Step 2: Convert to fraction form
    905,786.86/1,249,958.85 = 518,589.43/x
  3. Step 3: Cross multiply
    905,786.86x = 1,249,958.85 × 518,589.43
  4. Step 4: Simplify right side
    905,786.86x = 648,215,447,544.96
  5. Step 5: Solve for x
    x = 648,215,447,544.96/905,786.86
  6. Step 6: Final answer
    x = 715,637.95

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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.