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Finding the Fourth Proportional to 717,408.29, 990,048.83 and 445,625.03

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Solution

The fourth proportional to 717,408.29, 990,048.83 and 445,625.03 is: 614,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,408.29 : 990,048.83 = 445,625.03 : x
  2. Step 2: Convert to fraction form
    717,408.29/990,048.83 = 445,625.03/x
  3. Step 3: Cross multiply
    717,408.29x = 990,048.83 × 445,625.03
  4. Step 4: Simplify right side
    717,408.29x = 441,190,532,391.85
  5. Step 5: Solve for x
    x = 441,190,532,391.85/717,408.29
  6. Step 6: Final answer
    x = 614,978.31

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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.