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Finding the Fourth Proportional to 662,958.40, 993,854.40 and 396,824.80

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Solution

The fourth proportional to 662,958.40, 993,854.40 and 396,824.80 is: 594,888.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,958.40 : 993,854.40 = 396,824.80 : x
  2. Step 2: Convert to fraction form
    662,958.40/993,854.40 = 396,824.80/x
  3. Step 3: Cross multiply
    662,958.40x = 993,854.40 × 396,824.80
  4. Step 4: Simplify right side
    662,958.40x = 394,386,073,509.12
  5. Step 5: Solve for x
    x = 394,386,073,509.12/662,958.40
  6. Step 6: Final answer
    x = 594,888.12

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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.