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Finding the Fourth Proportional to 885,832.88, 1,329,215.88 and 387,546.80

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Solution

The fourth proportional to 885,832.88, 1,329,215.88 and 387,546.80 is: 581,524.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,832.88 : 1,329,215.88 = 387,546.80 : x
  2. Step 2: Convert to fraction form
    885,832.88/1,329,215.88 = 387,546.80/x
  3. Step 3: Cross multiply
    885,832.88x = 1,329,215.88 × 387,546.80
  4. Step 4: Simplify right side
    885,832.88x = 515,133,360,803.18
  5. Step 5: Solve for x
    x = 515,133,360,803.18/885,832.88
  6. Step 6: Final answer
    x = 581,524.32

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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.