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Finding the Fourth Proportional to 489,989.82, 676,205.15 and 335,265.67

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Solution

The fourth proportional to 489,989.82, 676,205.15 and 335,265.67 is: 462,679.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,989.82 : 676,205.15 = 335,265.67 : x
  2. Step 2: Convert to fraction form
    489,989.82/676,205.15 = 335,265.67/x
  3. Step 3: Cross multiply
    489,989.82x = 676,205.15 × 335,265.67
  4. Step 4: Simplify right side
    489,989.82x = 226,708,367,614.85
  5. Step 5: Solve for x
    x = 226,708,367,614.85/489,989.82
  6. Step 6: Final answer
    x = 462,679.75

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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.