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Finding the Fourth Proportional to 682,659.57, 942,424.39 and 498,691.56

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Solution

The fourth proportional to 682,659.57, 942,424.39 and 498,691.56 is: 688,453.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,659.57 : 942,424.39 = 498,691.56 : x
  2. Step 2: Convert to fraction form
    682,659.57/942,424.39 = 498,691.56/x
  3. Step 3: Cross multiply
    682,659.57x = 942,424.39 × 498,691.56
  4. Step 4: Simplify right side
    682,659.57x = 469,979,089,231.15
  5. Step 5: Solve for x
    x = 469,979,089,231.15/682,659.57
  6. Step 6: Final answer
    x = 688,453.09

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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.