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Finding the Fourth Proportional to 486,021.60, 729,032.40 and 361,605.60

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Solution

The fourth proportional to 486,021.60, 729,032.40 and 361,605.60 is: 542,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,021.60 : 729,032.40 = 361,605.60 : x
  2. Step 2: Convert to fraction form
    486,021.60/729,032.40 = 361,605.60/x
  3. Step 3: Cross multiply
    486,021.60x = 729,032.40 × 361,605.60
  4. Step 4: Simplify right side
    486,021.60x = 263,622,198,421.44
  5. Step 5: Solve for x
    x = 263,622,198,421.44/486,021.60
  6. Step 6: Final answer
    x = 542,408.40

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Similar ratio
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1.5x scale

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.