Home / 665,441.10-996,849.45-398,408.40

Finding the Fourth Proportional to 665,441.10, 996,849.45 and 398,408.40

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Solution

The fourth proportional to 665,441.10, 996,849.45 and 398,408.40 is: 596,826.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,441.10 : 996,849.45 = 398,408.40 : x
  2. Step 2: Convert to fraction form
    665,441.10/996,849.45 = 398,408.40/x
  3. Step 3: Cross multiply
    665,441.10x = 996,849.45 × 398,408.40
  4. Step 4: Simplify right side
    665,441.10x = 397,153,194,415.38
  5. Step 5: Solve for x
    x = 397,153,194,415.38/665,441.10
  6. Step 6: Final answer
    x = 596,826.97

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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.