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Finding the Fourth Proportional to 603,381.68, 905,058.51 and 303,781.82

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Solution

The fourth proportional to 603,381.68, 905,058.51 and 303,781.82 is: 455,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,381.68 : 905,058.51 = 303,781.82 : x
  2. Step 2: Convert to fraction form
    603,381.68/905,058.51 = 303,781.82/x
  3. Step 3: Cross multiply
    603,381.68x = 905,058.51 × 303,781.82
  4. Step 4: Simplify right side
    603,381.68x = 274,940,319,964.06
  5. Step 5: Solve for x
    x = 274,940,319,964.06/603,381.68
  6. Step 6: Final answer
    x = 455,665.67

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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.