Home / 812,686.64-1,219,110.14-280,137.56

Finding the Fourth Proportional to 812,686.64, 1,219,110.14 and 280,137.56

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Solution

The fourth proportional to 812,686.64, 1,219,110.14 and 280,137.56 is: 420,233.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,686.64 : 1,219,110.14 = 280,137.56 : x
  2. Step 2: Convert to fraction form
    812,686.64/1,219,110.14 = 280,137.56/x
  3. Step 3: Cross multiply
    812,686.64x = 1,219,110.14 × 280,137.56
  4. Step 4: Simplify right side
    812,686.64x = 341,518,534,595.65
  5. Step 5: Solve for x
    x = 341,518,534,595.65/812,686.64
  6. Step 6: Final answer
    x = 420,233.97

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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.