Home / 809,787.10-1,215,555.45-455,493.10

Finding the Fourth Proportional to 809,787.10, 1,215,555.45 and 455,493.10

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Solution

The fourth proportional to 809,787.10, 1,215,555.45 and 455,493.10 is: 683,731.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,787.10 : 1,215,555.45 = 455,493.10 : x
  2. Step 2: Convert to fraction form
    809,787.10/1,215,555.45 = 455,493.10/x
  3. Step 3: Cross multiply
    809,787.10x = 1,215,555.45 × 455,493.10
  4. Step 4: Simplify right side
    809,787.10x = 553,677,120,142.40
  5. Step 5: Solve for x
    x = 553,677,120,142.40/809,787.10
  6. Step 6: Final answer
    x = 683,731.71

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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.