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Finding the Fourth Proportional to 716,647.26, 988,977.87 and 394,348.26

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Solution

The fourth proportional to 716,647.26, 988,977.87 and 394,348.26 is: 544,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,647.26 : 988,977.87 = 394,348.26 : x
  2. Step 2: Convert to fraction form
    716,647.26/988,977.87 = 394,348.26/x
  3. Step 3: Cross multiply
    716,647.26x = 988,977.87 × 394,348.26
  4. Step 4: Simplify right side
    716,647.26x = 390,001,702,213.01
  5. Step 5: Solve for x
    x = 390,001,702,213.01/716,647.26
  6. Step 6: Final answer
    x = 544,203.16

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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.