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Finding the Fourth Proportional to 451,538.76, 622,658.34 and 315,523.15

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Solution

The fourth proportional to 451,538.76, 622,658.34 and 315,523.15 is: 435,096.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,538.76 : 622,658.34 = 315,523.15 : x
  2. Step 2: Convert to fraction form
    451,538.76/622,658.34 = 315,523.15/x
  3. Step 3: Cross multiply
    451,538.76x = 622,658.34 × 315,523.15
  4. Step 4: Simplify right side
    451,538.76x = 196,463,120,810.57
  5. Step 5: Solve for x
    x = 196,463,120,810.57/451,538.76
  6. Step 6: Final answer
    x = 435,096.91

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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.