Home / 1,145,408.70-1,716,983.10-640,211.70

Finding the Fourth Proportional to 1,145,408.70, 1,716,983.10 and 640,211.70

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Solution

The fourth proportional to 1,145,408.70, 1,716,983.10 and 640,211.70 is: 959,685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,408.70 : 1,716,983.10 = 640,211.70 : x
  2. Step 2: Convert to fraction form
    1,145,408.70/1,716,983.10 = 640,211.70/x
  3. Step 3: Cross multiply
    1,145,408.70x = 1,716,983.10 × 640,211.70
  4. Step 4: Simplify right side
    1,145,408.70x = 1,099,232,669,322.27
  5. Step 5: Solve for x
    x = 1,099,232,669,322.27/1,145,408.70
  6. Step 6: Final answer
    x = 959,685.98

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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.