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Finding the Fourth Proportional to 618,362.55, 925,969.15 and 407,360.79

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Solution

The fourth proportional to 618,362.55, 925,969.15 and 407,360.79 is: 610,003.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,362.55 : 925,969.15 = 407,360.79 : x
  2. Step 2: Convert to fraction form
    618,362.55/925,969.15 = 407,360.79/x
  3. Step 3: Cross multiply
    618,362.55x = 925,969.15 × 407,360.79
  4. Step 4: Simplify right side
    618,362.55x = 377,203,524,968.83
  5. Step 5: Solve for x
    x = 377,203,524,968.83/618,362.55
  6. Step 6: Final answer
    x = 610,003.83

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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.