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Finding the Fourth Proportional to 717,241.22, 989,792.87 and 394,950.54

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Solution

The fourth proportional to 717,241.22, 989,792.87 and 394,950.54 is: 545,031.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,241.22 : 989,792.87 = 394,950.54 : x
  2. Step 2: Convert to fraction form
    717,241.22/989,792.87 = 394,950.54/x
  3. Step 3: Cross multiply
    717,241.22x = 989,792.87 × 394,950.54
  4. Step 4: Simplify right side
    717,241.22x = 390,919,226,519.90
  5. Step 5: Solve for x
    x = 390,919,226,519.90/717,241.22
  6. Step 6: Final answer
    x = 545,031.74

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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.