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Finding the Fourth Proportional to 603,705.90, 906,142.05 and 367,509.90

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Solution

The fourth proportional to 603,705.90, 906,142.05 and 367,509.90 is: 551,619.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,705.90 : 906,142.05 = 367,509.90 : x
  2. Step 2: Convert to fraction form
    603,705.90/906,142.05 = 367,509.90/x
  3. Step 3: Cross multiply
    603,705.90x = 906,142.05 × 367,509.90
  4. Step 4: Simplify right side
    603,705.90x = 333,016,174,181.30
  5. Step 5: Solve for x
    x = 333,016,174,181.30/603,705.90
  6. Step 6: Final answer
    x = 551,619.88

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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.