Home / 712,212.16-982,855.68-389,952.26

Finding the Fourth Proportional to 712,212.16, 982,855.68 and 389,952.26

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Solution

The fourth proportional to 712,212.16, 982,855.68 and 389,952.26 is: 538,135.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,212.16 : 982,855.68 = 389,952.26 : x
  2. Step 2: Convert to fraction form
    712,212.16/982,855.68 = 389,952.26/x
  3. Step 3: Cross multiply
    712,212.16x = 982,855.68 × 389,952.26
  4. Step 4: Simplify right side
    712,212.16x = 383,266,793,669.84
  5. Step 5: Solve for x
    x = 383,266,793,669.84/712,212.16
  6. Step 6: Final answer
    x = 538,135.71

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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.