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Finding the Fourth Proportional to 978,232.20, 1,467,348.30 and 505,840.20

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Solution

The fourth proportional to 978,232.20, 1,467,348.30 and 505,840.20 is: 758,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,232.20 : 1,467,348.30 = 505,840.20 : x
  2. Step 2: Convert to fraction form
    978,232.20/1,467,348.30 = 505,840.20/x
  3. Step 3: Cross multiply
    978,232.20x = 1,467,348.30 × 505,840.20
  4. Step 4: Simplify right side
    978,232.20x = 742,243,757,541.66
  5. Step 5: Solve for x
    x = 742,243,757,541.66/978,232.20
  6. Step 6: Final answer
    x = 758,760.30

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Similar ratio
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1.5x scale

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.