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Finding the Fourth Proportional to 628,747.28, 867,536.70 and 374,048.72

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Solution

The fourth proportional to 628,747.28, 867,536.70 and 374,048.72 is: 516,107.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,747.28 : 867,536.70 = 374,048.72 : x
  2. Step 2: Convert to fraction form
    628,747.28/867,536.70 = 374,048.72/x
  3. Step 3: Cross multiply
    628,747.28x = 867,536.70 × 374,048.72
  4. Step 4: Simplify right side
    628,747.28x = 324,500,992,188.02
  5. Step 5: Solve for x
    x = 324,500,992,188.02/628,747.28
  6. Step 6: Final answer
    x = 516,107.19

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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.