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Finding the Fourth Proportional to 662,979.90, 993,886.65 and 396,846.30

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Solution

The fourth proportional to 662,979.90, 993,886.65 and 396,846.30 is: 594,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,979.90 : 993,886.65 = 396,846.30 : x
  2. Step 2: Convert to fraction form
    662,979.90/993,886.65 = 396,846.30/x
  3. Step 3: Cross multiply
    662,979.90x = 993,886.65 × 396,846.30
  4. Step 4: Simplify right side
    662,979.90x = 394,420,239,671.90
  5. Step 5: Solve for x
    x = 394,420,239,671.90/662,979.90
  6. Step 6: Final answer
    x = 594,920.36

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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.