Home / 468,974.40-647,196.72-287,786.43

Finding the Fourth Proportional to 468,974.40, 647,196.72 and 287,786.43

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Solution

The fourth proportional to 468,974.40, 647,196.72 and 287,786.43 is: 397,152.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,974.40 : 647,196.72 = 287,786.43 : x
  2. Step 2: Convert to fraction form
    468,974.40/647,196.72 = 287,786.43/x
  3. Step 3: Cross multiply
    468,974.40x = 647,196.72 × 287,786.43
  4. Step 4: Simplify right side
    468,974.40x = 186,254,433,556.51
  5. Step 5: Solve for x
    x = 186,254,433,556.51/468,974.40
  6. Step 6: Final answer
    x = 397,152.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.