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Finding the Fourth Proportional to 471,707.80, 707,561.70 and 322,408.60

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Solution

The fourth proportional to 471,707.80, 707,561.70 and 322,408.60 is: 483,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,707.80 : 707,561.70 = 322,408.60 : x
  2. Step 2: Convert to fraction form
    471,707.80/707,561.70 = 322,408.60/x
  3. Step 3: Cross multiply
    471,707.80x = 707,561.70 × 322,408.60
  4. Step 4: Simplify right side
    471,707.80x = 228,123,977,110.62
  5. Step 5: Solve for x
    x = 228,123,977,110.62/471,707.80
  6. Step 6: Final answer
    x = 483,612.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.