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Finding the Fourth Proportional to 620,480.72, 930,610.20 and 165,074.42

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Solution

The fourth proportional to 620,480.72, 930,610.20 and 165,074.42 is: 247,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,480.72 : 930,610.20 = 165,074.42 : x
  2. Step 2: Convert to fraction form
    620,480.72/930,610.20 = 165,074.42/x
  3. Step 3: Cross multiply
    620,480.72x = 930,610.20 × 165,074.42
  4. Step 4: Simplify right side
    620,480.72x = 153,619,934,358.03
  5. Step 5: Solve for x
    x = 153,619,934,358.03/620,480.72
  6. Step 6: Final answer
    x = 247,582.13

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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.