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Finding the Fourth Proportional to 603,744.20, 905,616.30 and 404,678.60

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Solution

The fourth proportional to 603,744.20, 905,616.30 and 404,678.60 is: 607,017.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,744.20 : 905,616.30 = 404,678.60 : x
  2. Step 2: Convert to fraction form
    603,744.20/905,616.30 = 404,678.60/x
  3. Step 3: Cross multiply
    603,744.20x = 905,616.30 × 404,678.60
  4. Step 4: Simplify right side
    603,744.20x = 366,483,536,421.18
  5. Step 5: Solve for x
    x = 366,483,536,421.18/603,744.20
  6. Step 6: Final answer
    x = 607,017.90

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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.