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Finding the Fourth Proportional to 612,872.49, 843,838.86 and 520,797.57

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Solution

The fourth proportional to 612,872.49, 843,838.86 and 520,797.57 is: 717,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,872.49 : 843,838.86 = 520,797.57 : x
  2. Step 2: Convert to fraction form
    612,872.49/843,838.86 = 520,797.57/x
  3. Step 3: Cross multiply
    612,872.49x = 843,838.86 × 520,797.57
  4. Step 4: Simplify right side
    612,872.49x = 439,469,227,759.57
  5. Step 5: Solve for x
    x = 439,469,227,759.57/612,872.49
  6. Step 6: Final answer
    x = 717,064.70

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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.