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Finding the Fourth Proportional to 510,872.40, 766,891.80 and 300,628.80

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Solution

The fourth proportional to 510,872.40, 766,891.80 and 300,628.80 is: 451,286.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,872.40 : 766,891.80 = 300,628.80 : x
  2. Step 2: Convert to fraction form
    510,872.40/766,891.80 = 300,628.80/x
  3. Step 3: Cross multiply
    510,872.40x = 766,891.80 × 300,628.80
  4. Step 4: Simplify right side
    510,872.40x = 230,549,761,563.84
  5. Step 5: Solve for x
    x = 230,549,761,563.84/510,872.40
  6. Step 6: Final answer
    x = 451,286.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.