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Finding the Fourth Proportional to 603,688.05, 905,641.43 and 303,412.95

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Solution

The fourth proportional to 603,688.05, 905,641.43 and 303,412.95 is: 455,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,688.05 : 905,641.43 = 303,412.95 : x
  2. Step 2: Convert to fraction form
    603,688.05/905,641.43 = 303,412.95/x
  3. Step 3: Cross multiply
    603,688.05x = 905,641.43 × 303,412.95
  4. Step 4: Simplify right side
    603,688.05x = 274,783,336,401.45
  5. Step 5: Solve for x
    x = 274,783,336,401.45/603,688.05
  6. Step 6: Final answer
    x = 455,174.38

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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.