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Finding the Fourth Proportional to 613,608.18, 918,681.87 and 324,765.46

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Solution

The fourth proportional to 613,608.18, 918,681.87 and 324,765.46 is: 486,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,608.18 : 918,681.87 = 324,765.46 : x
  2. Step 2: Convert to fraction form
    613,608.18/918,681.87 = 324,765.46/x
  3. Step 3: Cross multiply
    613,608.18x = 918,681.87 × 324,765.46
  4. Step 4: Simplify right side
    613,608.18x = 298,356,140,104.21
  5. Step 5: Solve for x
    x = 298,356,140,104.21/613,608.18
  6. Step 6: Final answer
    x = 486,232.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.