Home / 818,840.95-1,228,641.87-313,234.80

Finding the Fourth Proportional to 818,840.95, 1,228,641.87 and 313,234.80

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Solution

The fourth proportional to 818,840.95, 1,228,641.87 and 313,234.80 is: 469,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,840.95 : 1,228,641.87 = 313,234.80 : x
  2. Step 2: Convert to fraction form
    818,840.95/1,228,641.87 = 313,234.80/x
  3. Step 3: Cross multiply
    818,840.95x = 1,228,641.87 × 313,234.80
  4. Step 4: Simplify right side
    818,840.95x = 384,853,385,226.35
  5. Step 5: Solve for x
    x = 384,853,385,226.35/818,840.95
  6. Step 6: Final answer
    x = 469,997.73

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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.