Home / 812,852.12-1,219,081.26-339,280.76

Finding the Fourth Proportional to 812,852.12, 1,219,081.26 and 339,280.76

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Solution

The fourth proportional to 812,852.12, 1,219,081.26 and 339,280.76 is: 508,838.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,852.12 : 1,219,081.26 = 339,280.76 : x
  2. Step 2: Convert to fraction form
    812,852.12/1,219,081.26 = 339,280.76/x
  3. Step 3: Cross multiply
    812,852.12x = 1,219,081.26 × 339,280.76
  4. Step 4: Simplify right side
    812,852.12x = 413,610,816,394.56
  5. Step 5: Solve for x
    x = 413,610,816,394.56/812,852.12
  6. Step 6: Final answer
    x = 508,838.95

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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.