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Finding the Fourth Proportional to 455,371.56, 682,901.82 and 286,787.88

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Solution

The fourth proportional to 455,371.56, 682,901.82 and 286,787.88 is: 430,083.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,371.56 : 682,901.82 = 286,787.88 : x
  2. Step 2: Convert to fraction form
    455,371.56/682,901.82 = 286,787.88/x
  3. Step 3: Cross multiply
    455,371.56x = 682,901.82 × 286,787.88
  4. Step 4: Simplify right side
    455,371.56x = 195,847,965,205.94
  5. Step 5: Solve for x
    x = 195,847,965,205.94/455,371.56
  6. Step 6: Final answer
    x = 430,083.88

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1.5x scale

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.