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Finding the Fourth Proportional to 603,485.90, 905,812.05 and 367,289.90

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Solution

The fourth proportional to 603,485.90, 905,812.05 and 367,289.90 is: 551,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,485.90 : 905,812.05 = 367,289.90 : x
  2. Step 2: Convert to fraction form
    603,485.90/905,812.05 = 367,289.90/x
  3. Step 3: Cross multiply
    603,485.90x = 905,812.05 × 367,289.90
  4. Step 4: Simplify right side
    603,485.90x = 332,695,617,263.30
  5. Step 5: Solve for x
    x = 332,695,617,263.30/603,485.90
  6. Step 6: Final answer
    x = 551,289.79

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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.