Home / 465,833.18-643,049.34-320,842.38

Finding the Fourth Proportional to 465,833.18, 643,049.34 and 320,842.38

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Solution

The fourth proportional to 465,833.18, 643,049.34 and 320,842.38 is: 442,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,833.18 : 643,049.34 = 320,842.38 : x
  2. Step 2: Convert to fraction form
    465,833.18/643,049.34 = 320,842.38/x
  3. Step 3: Cross multiply
    465,833.18x = 643,049.34 × 320,842.38
  4. Step 4: Simplify right side
    465,833.18x = 206,317,480,703.03
  5. Step 5: Solve for x
    x = 206,317,480,703.03/465,833.18
  6. Step 6: Final answer
    x = 442,899.93

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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.