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Finding the Fourth Proportional to 716,648.26, 988,979.25 and 394,349.26

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Solution

The fourth proportional to 716,648.26, 988,979.25 and 394,349.26 is: 544,204.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,648.26 : 988,979.25 = 394,349.26 : x
  2. Step 2: Convert to fraction form
    716,648.26/988,979.25 = 394,349.26/x
  3. Step 3: Cross multiply
    716,648.26x = 988,979.25 × 394,349.26
  4. Step 4: Simplify right side
    716,648.26x = 390,003,235,392.86
  5. Step 5: Solve for x
    x = 390,003,235,392.86/716,648.26
  6. Step 6: Final answer
    x = 544,204.54

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Double scale
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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.