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Finding the Fourth Proportional to 603,661.55, 905,673.42 and 243,647.19

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Solution

The fourth proportional to 603,661.55, 905,673.42 and 243,647.19 is: 365,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,661.55 : 905,673.42 = 243,647.19 : x
  2. Step 2: Convert to fraction form
    603,661.55/905,673.42 = 243,647.19/x
  3. Step 3: Cross multiply
    603,661.55x = 905,673.42 × 243,647.19
  4. Step 4: Simplify right side
    603,661.55x = 220,664,783,840.69
  5. Step 5: Solve for x
    x = 220,664,783,840.69/603,661.55
  6. Step 6: Final answer
    x = 365,543.88

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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.