Home / 1,206,787.20-1,664,890.19-777,316.61

Finding the Fourth Proportional to 1,206,787.20, 1,664,890.19 and 777,316.61

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Solution

The fourth proportional to 1,206,787.20, 1,664,890.19 and 777,316.61 is: 1,072,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,787.20 : 1,664,890.19 = 777,316.61 : x
  2. Step 2: Convert to fraction form
    1,206,787.20/1,664,890.19 = 777,316.61/x
  3. Step 3: Cross multiply
    1,206,787.20x = 1,664,890.19 × 777,316.61
  4. Step 4: Simplify right side
    1,206,787.20x = 1,294,146,786,302.02
  5. Step 5: Solve for x
    x = 1,294,146,786,302.02/1,206,787.20
  6. Step 6: Final answer
    x = 1,072,390.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.