Home / 859,671.72-1,289,061.90-455,083.20

Finding the Fourth Proportional to 859,671.72, 1,289,061.90 and 455,083.20

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Solution

The fourth proportional to 859,671.72, 1,289,061.90 and 455,083.20 is: 682,388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,671.72 : 1,289,061.90 = 455,083.20 : x
  2. Step 2: Convert to fraction form
    859,671.72/1,289,061.90 = 455,083.20/x
  3. Step 3: Cross multiply
    859,671.72x = 1,289,061.90 × 455,083.20
  4. Step 4: Simplify right side
    859,671.72x = 586,630,414,450.08
  5. Step 5: Solve for x
    x = 586,630,414,450.08/859,671.72
  6. Step 6: Final answer
    x = 682,388.87

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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.