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Finding the Fourth Proportional to 1,673,873, 2,511,915.42 and 787,478.12

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Solution

The fourth proportional to 1,673,873, 2,511,915.42 and 787,478.12 is: 1,181,737.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673,873 : 2,511,915.42 = 787,478.12 : x
  2. Step 2: Convert to fraction form
    1,673,873/2,511,915.42 = 787,478.12/x
  3. Step 3: Cross multiply
    1,673,873x = 2,511,915.42 × 787,478.12
  4. Step 4: Simplify right side
    1,673,873x = 1,978,078,432,540.61
  5. Step 5: Solve for x
    x = 1,978,078,432,540.61/1,673,873
  6. Step 6: Final answer
    x = 1,181,737.46

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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.