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Finding the Fourth Proportional to 1,324,631.07, 1,986,965.24 and 378,001.89

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Solution

The fourth proportional to 1,324,631.07, 1,986,965.24 and 378,001.89 is: 567,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324,631.07 : 1,986,965.24 = 378,001.89 : x
  2. Step 2: Convert to fraction form
    1,324,631.07/1,986,965.24 = 378,001.89/x
  3. Step 3: Cross multiply
    1,324,631.07x = 1,986,965.24 × 378,001.89
  4. Step 4: Simplify right side
    1,324,631.07x = 751,076,614,194.29
  5. Step 5: Solve for x
    x = 751,076,614,194.29/1,324,631.07
  6. Step 6: Final answer
    x = 567,008.15

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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.