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Finding the Fourth Proportional to 978,167.44, 1,349,853.78 and 548,446.24

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Solution

The fourth proportional to 978,167.44, 1,349,853.78 and 548,446.24 is: 756,846.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,167.44 : 1,349,853.78 = 548,446.24 : x
  2. Step 2: Convert to fraction form
    978,167.44/1,349,853.78 = 548,446.24/x
  3. Step 3: Cross multiply
    978,167.44x = 1,349,853.78 × 548,446.24
  4. Step 4: Simplify right side
    978,167.44x = 740,322,230,190.79
  5. Step 5: Solve for x
    x = 740,322,230,190.79/978,167.44
  6. Step 6: Final answer
    x = 756,846.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.