Home / 1,145,019.70-1,716,399.60-639,822.70

Finding the Fourth Proportional to 1,145,019.70, 1,716,399.60 and 639,822.70

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Solution

The fourth proportional to 1,145,019.70, 1,716,399.60 and 639,822.70 is: 959,102.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,019.70 : 1,716,399.60 = 639,822.70 : x
  2. Step 2: Convert to fraction form
    1,145,019.70/1,716,399.60 = 639,822.70/x
  3. Step 3: Cross multiply
    1,145,019.70x = 1,716,399.60 × 639,822.70
  4. Step 4: Simplify right side
    1,145,019.70x = 1,098,191,426,350.92
  5. Step 5: Solve for x
    x = 1,098,191,426,350.92/1,145,019.70
  6. Step 6: Final answer
    x = 959,102.65

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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.