Home / 812,499.21-1,218,745.85-243,877.86

Finding the Fourth Proportional to 812,499.21, 1,218,745.85 and 243,877.86

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Solution

The fourth proportional to 812,499.21, 1,218,745.85 and 243,877.86 is: 365,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,499.21 : 1,218,745.85 = 243,877.86 : x
  2. Step 2: Convert to fraction form
    812,499.21/1,218,745.85 = 243,877.86/x
  3. Step 3: Cross multiply
    812,499.21x = 1,218,745.85 × 243,877.86
  4. Step 4: Simplify right side
    812,499.21x = 297,225,128,562.49
  5. Step 5: Solve for x
    x = 297,225,128,562.49/812,499.21
  6. Step 6: Final answer
    x = 365,815.90

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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.