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Finding the Fourth Proportional to 1,022,827.78, 1,531,971.73 and 661,837.91

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Solution

The fourth proportional to 1,022,827.78, 1,531,971.73 and 661,837.91 is: 991,288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022,827.78 : 1,531,971.73 = 661,837.91 : x
  2. Step 2: Convert to fraction form
    1,022,827.78/1,531,971.73 = 661,837.91/x
  3. Step 3: Cross multiply
    1,022,827.78x = 1,531,971.73 × 661,837.91
  4. Step 4: Simplify right side
    1,022,827.78x = 1,013,916,967,962.28
  5. Step 5: Solve for x
    x = 1,013,916,967,962.28/1,022,827.78
  6. Step 6: Final answer
    x = 991,288.06

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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.