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Finding the Fourth Proportional to 715,999.26, 987,833.10 and 443,969.22

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Solution

The fourth proportional to 715,999.26, 987,833.10 and 443,969.22 is: 612,525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,999.26 : 987,833.10 = 443,969.22 : x
  2. Step 2: Convert to fraction form
    715,999.26/987,833.10 = 443,969.22/x
  3. Step 3: Cross multiply
    715,999.26x = 987,833.10 × 443,969.22
  4. Step 4: Simplify right side
    715,999.26x = 438,567,490,897.18
  5. Step 5: Solve for x
    x = 438,567,490,897.18/715,999.26
  6. Step 6: Final answer
    x = 612,525.06

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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.