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Finding the Fourth Proportional to 451,375.60, 622,615.08 and 290,439.76

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Solution

The fourth proportional to 451,375.60, 622,615.08 and 290,439.76 is: 400,624.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,375.60 : 622,615.08 = 290,439.76 : x
  2. Step 2: Convert to fraction form
    451,375.60/622,615.08 = 290,439.76/x
  3. Step 3: Cross multiply
    451,375.60x = 622,615.08 × 290,439.76
  4. Step 4: Simplify right side
    451,375.60x = 180,832,174,407.58
  5. Step 5: Solve for x
    x = 180,832,174,407.58/451,375.60
  6. Step 6: Final answer
    x = 400,624.61

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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.