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Finding the Fourth Proportional to 603,990.30, 906,094.80 and 303,715.20

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Solution

The fourth proportional to 603,990.30, 906,094.80 and 303,715.20 is: 455,627.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,990.30 : 906,094.80 = 303,715.20 : x
  2. Step 2: Convert to fraction form
    603,990.30/906,094.80 = 303,715.20/x
  3. Step 3: Cross multiply
    603,990.30x = 906,094.80 × 303,715.20
  4. Step 4: Simplify right side
    603,990.30x = 275,194,763,400.96
  5. Step 5: Solve for x
    x = 275,194,763,400.96/603,990.30
  6. Step 6: Final answer
    x = 455,627.79

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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.