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Finding the Fourth Proportional to 603,988.30, 906,091.80 and 303,713.20

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Solution

The fourth proportional to 603,988.30, 906,091.80 and 303,713.20 is: 455,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,988.30 : 906,091.80 = 303,713.20 : x
  2. Step 2: Convert to fraction form
    603,988.30/906,091.80 = 303,713.20/x
  3. Step 3: Cross multiply
    603,988.30x = 906,091.80 × 303,713.20
  4. Step 4: Simplify right side
    603,988.30x = 275,192,040,071.76
  5. Step 5: Solve for x
    x = 275,192,040,071.76/603,988.30
  6. Step 6: Final answer
    x = 455,624.79

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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.