Home / 489,209.43-674,822.30-307,633.35

Finding the Fourth Proportional to 489,209.43, 674,822.30 and 307,633.35

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Solution

The fourth proportional to 489,209.43, 674,822.30 and 307,633.35 is: 424,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,209.43 : 674,822.30 = 307,633.35 : x
  2. Step 2: Convert to fraction form
    489,209.43/674,822.30 = 307,633.35/x
  3. Step 3: Cross multiply
    489,209.43x = 674,822.30 × 307,633.35
  4. Step 4: Simplify right side
    489,209.43x = 207,597,843,265.54
  5. Step 5: Solve for x
    x = 207,597,843,265.54/489,209.43
  6. Step 6: Final answer
    x = 424,353.72

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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.