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Finding the Fourth Proportional to 682,060.68, 942,399.22 and 490,695.56

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Solution

The fourth proportional to 682,060.68, 942,399.22 and 490,695.56 is: 677,991.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,060.68 : 942,399.22 = 490,695.56 : x
  2. Step 2: Convert to fraction form
    682,060.68/942,399.22 = 490,695.56/x
  3. Step 3: Cross multiply
    682,060.68x = 942,399.22 × 490,695.56
  4. Step 4: Simplify right side
    682,060.68x = 462,431,113,001.46
  5. Step 5: Solve for x
    x = 462,431,113,001.46/682,060.68
  6. Step 6: Final answer
    x = 677,991.16

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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.