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Finding the Fourth Proportional to 643,611.03, 965,575.71 and 454,442.03

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Solution

The fourth proportional to 643,611.03, 965,575.71 and 454,442.03 is: 681,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,611.03 : 965,575.71 = 454,442.03 : x
  2. Step 2: Convert to fraction form
    643,611.03/965,575.71 = 454,442.03/x
  3. Step 3: Cross multiply
    643,611.03x = 965,575.71 × 454,442.03
  4. Step 4: Simplify right side
    643,611.03x = 438,798,180,929.70
  5. Step 5: Solve for x
    x = 438,798,180,929.70/643,611.03
  6. Step 6: Final answer
    x = 681,775.42

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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.