Home / 812,520.54-1,218,894.30-339,097.50

Finding the Fourth Proportional to 812,520.54, 1,218,894.30 and 339,097.50

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Solution

The fourth proportional to 812,520.54, 1,218,894.30 and 339,097.50 is: 508,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,520.54 : 1,218,894.30 = 339,097.50 : x
  2. Step 2: Convert to fraction form
    812,520.54/1,218,894.30 = 339,097.50/x
  3. Step 3: Cross multiply
    812,520.54x = 1,218,894.30 × 339,097.50
  4. Step 4: Simplify right side
    812,520.54x = 413,324,009,894.25
  5. Step 5: Solve for x
    x = 413,324,009,894.25/812,520.54
  6. Step 6: Final answer
    x = 508,693.61

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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.