Home / 860,003.10-1,289,083.05-327,318.30

Finding the Fourth Proportional to 860,003.10, 1,289,083.05 and 327,318.30

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Solution

The fourth proportional to 860,003.10, 1,289,083.05 and 327,318.30 is: 490,626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,003.10 : 1,289,083.05 = 327,318.30 : x
  2. Step 2: Convert to fraction form
    860,003.10/1,289,083.05 = 327,318.30/x
  3. Step 3: Cross multiply
    860,003.10x = 1,289,083.05 × 327,318.30
  4. Step 4: Simplify right side
    860,003.10x = 421,940,472,484.82
  5. Step 5: Solve for x
    x = 421,940,472,484.82/860,003.10
  6. Step 6: Final answer
    x = 490,626.69

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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.