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Finding the Fourth Proportional to 717,004.85, 989,494.92 and 394,744.95

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Solution

The fourth proportional to 717,004.85, 989,494.92 and 394,744.95 is: 544,763.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,004.85 : 989,494.92 = 394,744.95 : x
  2. Step 2: Convert to fraction form
    717,004.85/989,494.92 = 394,744.95/x
  3. Step 3: Cross multiply
    717,004.85x = 989,494.92 × 394,744.95
  4. Step 4: Simplify right side
    717,004.85x = 390,598,122,720.65
  5. Step 5: Solve for x
    x = 390,598,122,720.65/717,004.85
  6. Step 6: Final answer
    x = 544,763.58

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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.