Home / 712,231.67-982,879.23-389,941.68

Finding the Fourth Proportional to 712,231.67, 982,879.23 and 389,941.68

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Solution

The fourth proportional to 712,231.67, 982,879.23 and 389,941.68 is: 538,119.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,231.67 : 982,879.23 = 389,941.68 : x
  2. Step 2: Convert to fraction form
    712,231.67/982,879.23 = 389,941.68/x
  3. Step 3: Cross multiply
    712,231.67x = 982,879.23 × 389,941.68
  4. Step 4: Simplify right side
    712,231.67x = 383,265,578,183.31
  5. Step 5: Solve for x
    x = 383,265,578,183.31/712,231.67
  6. Step 6: Final answer
    x = 538,119.26

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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.