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Finding the Fourth Proportional to 873,766.86, 1,310,649 and 274,780.50

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Solution

The fourth proportional to 873,766.86, 1,310,649 and 274,780.50 is: 412,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,766.86 : 1,310,649 = 274,780.50 : x
  2. Step 2: Convert to fraction form
    873,766.86/1,310,649 = 274,780.50/x
  3. Step 3: Cross multiply
    873,766.86x = 1,310,649 × 274,780.50
  4. Step 4: Simplify right side
    873,766.86x = 360,140,787,544.50
  5. Step 5: Solve for x
    x = 360,140,787,544.50/873,766.86
  6. Step 6: Final answer
    x = 412,170.34

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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.