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Finding the Fourth Proportional to 510,725.22, 765,555.65 and 285,755.82

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Solution

The fourth proportional to 510,725.22, 765,555.65 and 285,755.82 is: 428,335.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,725.22 : 765,555.65 = 285,755.82 : x
  2. Step 2: Convert to fraction form
    510,725.22/765,555.65 = 285,755.82/x
  3. Step 3: Cross multiply
    510,725.22x = 765,555.65 × 285,755.82
  4. Step 4: Simplify right side
    510,725.22x = 218,761,978,693.61
  5. Step 5: Solve for x
    x = 218,761,978,693.61/510,725.22
  6. Step 6: Final answer
    x = 428,335.97

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1.5x scale

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.