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Finding the Fourth Proportional to 717,991.85, 990,997.59 and 446,264.96

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Solution

The fourth proportional to 717,991.85, 990,997.59 and 446,264.96 is: 615,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,991.85 : 990,997.59 = 446,264.96 : x
  2. Step 2: Convert to fraction form
    717,991.85/990,997.59 = 446,264.96/x
  3. Step 3: Cross multiply
    717,991.85x = 990,997.59 × 446,264.96
  4. Step 4: Simplify right side
    717,991.85x = 442,247,494,906.46
  5. Step 5: Solve for x
    x = 442,247,494,906.46/717,991.85
  6. Step 6: Final answer
    x = 615,950.58

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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.