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Finding the Fourth Proportional to 620,615.52, 856,450.22 and 352,343.52

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Solution

The fourth proportional to 620,615.52, 856,450.22 and 352,343.52 is: 486,234.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,615.52 : 856,450.22 = 352,343.52 : x
  2. Step 2: Convert to fraction form
    620,615.52/856,450.22 = 352,343.52/x
  3. Step 3: Cross multiply
    620,615.52x = 856,450.22 × 352,343.52
  4. Step 4: Simplify right side
    620,615.52x = 301,764,685,219.57
  5. Step 5: Solve for x
    x = 301,764,685,219.57/620,615.52
  6. Step 6: Final answer
    x = 486,234.51

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1.5x scale

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.