Home / 456,120.72-684,124.38-189,846.18

Finding the Fourth Proportional to 456,120.72, 684,124.38 and 189,846.18

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Solution

The fourth proportional to 456,120.72, 684,124.38 and 189,846.18 is: 284,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,120.72 : 684,124.38 = 189,846.18 : x
  2. Step 2: Convert to fraction form
    456,120.72/684,124.38 = 189,846.18/x
  3. Step 3: Cross multiply
    456,120.72x = 684,124.38 × 189,846.18
  4. Step 4: Simplify right side
    456,120.72x = 129,878,400,187.87
  5. Step 5: Solve for x
    x = 129,878,400,187.87/456,120.72
  6. Step 6: Final answer
    x = 284,745.67

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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.