Home / 648,640.71-972,961.07-193,238.87

Finding the Fourth Proportional to 648,640.71, 972,961.07 and 193,238.87

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Solution

The fourth proportional to 648,640.71, 972,961.07 and 193,238.87 is: 289,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,640.71 : 972,961.07 = 193,238.87 : x
  2. Step 2: Convert to fraction form
    648,640.71/972,961.07 = 193,238.87/x
  3. Step 3: Cross multiply
    648,640.71x = 972,961.07 × 193,238.87
  4. Step 4: Simplify right side
    648,640.71x = 188,013,891,889.79
  5. Step 5: Solve for x
    x = 188,013,891,889.79/648,640.71
  6. Step 6: Final answer
    x = 289,858.30

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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.