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Finding the Fourth Proportional to 603,345.78, 905,399.82 and 337,280.85

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Solution

The fourth proportional to 603,345.78, 905,399.82 and 337,280.85 is: 506,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,345.78 : 905,399.82 = 337,280.85 : x
  2. Step 2: Convert to fraction form
    603,345.78/905,399.82 = 337,280.85/x
  3. Step 3: Cross multiply
    603,345.78x = 905,399.82 × 337,280.85
  4. Step 4: Simplify right side
    603,345.78x = 305,374,020,879.45
  5. Step 5: Solve for x
    x = 305,374,020,879.45/603,345.78
  6. Step 6: Final answer
    x = 506,134.34

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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.