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Finding the Fourth Proportional to 715,933.65, 987,893.37 and 443,902.32

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Solution

The fourth proportional to 715,933.65, 987,893.37 and 443,902.32 is: 612,526.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,933.65 : 987,893.37 = 443,902.32 : x
  2. Step 2: Convert to fraction form
    715,933.65/987,893.37 = 443,902.32/x
  3. Step 3: Cross multiply
    715,933.65x = 987,893.37 × 443,902.32
  4. Step 4: Simplify right side
    715,933.65x = 438,528,158,855.62
  5. Step 5: Solve for x
    x = 438,528,158,855.62/715,933.65
  6. Step 6: Final answer
    x = 612,526.26

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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.