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Finding the Fourth Proportional to 614,073.88, 919,988.56 and 445,175.25

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Solution

The fourth proportional to 614,073.88, 919,988.56 and 445,175.25 is: 666,949.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,073.88 : 919,988.56 = 445,175.25 : x
  2. Step 2: Convert to fraction form
    614,073.88/919,988.56 = 445,175.25/x
  3. Step 3: Cross multiply
    614,073.88x = 919,988.56 × 445,175.25
  4. Step 4: Simplify right side
    614,073.88x = 409,556,137,195.14
  5. Step 5: Solve for x
    x = 409,556,137,195.14/614,073.88
  6. Step 6: Final answer
    x = 666,949.29

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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.