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Finding the Fourth Proportional to 603,839.40, 906,342.30 and 367,643.40

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Solution

The fourth proportional to 603,839.40, 906,342.30 and 367,643.40 is: 551,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,839.40 : 906,342.30 = 367,643.40 : x
  2. Step 2: Convert to fraction form
    603,839.40/906,342.30 = 367,643.40/x
  3. Step 3: Cross multiply
    603,839.40x = 906,342.30 × 367,643.40
  4. Step 4: Simplify right side
    603,839.40x = 333,210,764,735.82
  5. Step 5: Solve for x
    x = 333,210,764,735.82/603,839.40
  6. Step 6: Final answer
    x = 551,820.18

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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.