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Finding the Fourth Proportional to 504,786.48, 756,957.98 and 189,021.90

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Solution

The fourth proportional to 504,786.48, 756,957.98 and 189,021.90 is: 283,449.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,786.48 : 756,957.98 = 189,021.90 : x
  2. Step 2: Convert to fraction form
    504,786.48/756,957.98 = 189,021.90/x
  3. Step 3: Cross multiply
    504,786.48x = 756,957.98 × 189,021.90
  4. Step 4: Simplify right side
    504,786.48x = 143,081,635,599.76
  5. Step 5: Solve for x
    x = 143,081,635,599.76/504,786.48
  6. Step 6: Final answer
    x = 283,449.82

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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.