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Finding the Fourth Proportional to 607,676.52, 911,439.20 and 379,992

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Solution

The fourth proportional to 607,676.52, 911,439.20 and 379,992 is: 569,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,676.52 : 911,439.20 = 379,992 : x
  2. Step 2: Convert to fraction form
    607,676.52/911,439.20 = 379,992/x
  3. Step 3: Cross multiply
    607,676.52x = 911,439.20 × 379,992
  4. Step 4: Simplify right side
    607,676.52x = 346,339,604,486.40
  5. Step 5: Solve for x
    x = 346,339,604,486.40/607,676.52
  6. Step 6: Final answer
    x = 569,940.74

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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.