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Finding the Fourth Proportional to 889,734.78, 1,227,835.13 and 481,837.28

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Solution

The fourth proportional to 889,734.78, 1,227,835.13 and 481,837.28 is: 664,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,734.78 : 1,227,835.13 = 481,837.28 : x
  2. Step 2: Convert to fraction form
    889,734.78/1,227,835.13 = 481,837.28/x
  3. Step 3: Cross multiply
    889,734.78x = 1,227,835.13 × 481,837.28
  4. Step 4: Simplify right side
    889,734.78x = 591,616,730,779.28
  5. Step 5: Solve for x
    x = 591,616,730,779.28/889,734.78
  6. Step 6: Final answer
    x = 664,936.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.