Home / 645,826.56-891,371.52-377,640.96

Finding the Fourth Proportional to 645,826.56, 891,371.52 and 377,640.96

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Solution

The fourth proportional to 645,826.56, 891,371.52 and 377,640.96 is: 521,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,826.56 : 891,371.52 = 377,640.96 : x
  2. Step 2: Convert to fraction form
    645,826.56/891,371.52 = 377,640.96/x
  3. Step 3: Cross multiply
    645,826.56x = 891,371.52 × 377,640.96
  4. Step 4: Simplify right side
    645,826.56x = 336,618,396,529.46
  5. Step 5: Solve for x
    x = 336,618,396,529.46/645,826.56
  6. Step 6: Final answer
    x = 521,221.05

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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.