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Finding the Fourth Proportional to 715,998.26, 987,831.72 and 443,968.22

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Solution

The fourth proportional to 715,998.26, 987,831.72 and 443,968.22 is: 612,523.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,998.26 : 987,831.72 = 443,968.22 : x
  2. Step 2: Convert to fraction form
    715,998.26/987,831.72 = 443,968.22/x
  3. Step 3: Cross multiply
    715,998.26x = 987,831.72 × 443,968.22
  4. Step 4: Simplify right side
    715,998.26x = 438,565,890,387.94
  5. Step 5: Solve for x
    x = 438,565,890,387.94/715,998.26
  6. Step 6: Final answer
    x = 612,523.68

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1.5x scale

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.