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Finding the Fourth Proportional to 1,227,971.72, 1,840,410.48 and 657,939.08

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Solution

The fourth proportional to 1,227,971.72, 1,840,410.48 and 657,939.08 is: 986,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227,971.72 : 1,840,410.48 = 657,939.08 : x
  2. Step 2: Convert to fraction form
    1,227,971.72/1,840,410.48 = 657,939.08/x
  3. Step 3: Cross multiply
    1,227,971.72x = 1,840,410.48 × 657,939.08
  4. Step 4: Simplify right side
    1,227,971.72x = 1,210,877,978,033.56
  5. Step 5: Solve for x
    x = 1,210,877,978,033.56/1,227,971.72
  6. Step 6: Final answer
    x = 986,079.69

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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.