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Finding the Fourth Proportional to 652,240.70, 978,361.05 and 439,664.30

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Solution

The fourth proportional to 652,240.70, 978,361.05 and 439,664.30 is: 659,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,240.70 : 978,361.05 = 439,664.30 : x
  2. Step 2: Convert to fraction form
    652,240.70/978,361.05 = 439,664.30/x
  3. Step 3: Cross multiply
    652,240.70x = 978,361.05 × 439,664.30
  4. Step 4: Simplify right side
    652,240.70x = 430,150,426,195.52
  5. Step 5: Solve for x
    x = 430,150,426,195.52/652,240.70
  6. Step 6: Final answer
    x = 659,496.45

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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.