Home / 1,206,977.60-1,665,640.40-663,124.69

Finding the Fourth Proportional to 1,206,977.60, 1,665,640.40 and 663,124.69

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Solution

The fourth proportional to 1,206,977.60, 1,665,640.40 and 663,124.69 is: 915,118.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,977.60 : 1,665,640.40 = 663,124.69 : x
  2. Step 2: Convert to fraction form
    1,206,977.60/1,665,640.40 = 663,124.69/x
  3. Step 3: Cross multiply
    1,206,977.60x = 1,665,640.40 × 663,124.69
  4. Step 4: Simplify right side
    1,206,977.60x = 1,104,527,273,901.48
  5. Step 5: Solve for x
    x = 1,104,527,273,901.48/1,206,977.60
  6. Step 6: Final answer
    x = 915,118.29

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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.