Home / 648,414.72-972,156.33-306,668.43

Finding the Fourth Proportional to 648,414.72, 972,156.33 and 306,668.43

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Solution

The fourth proportional to 648,414.72, 972,156.33 and 306,668.43 is: 459,782.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,414.72 : 972,156.33 = 306,668.43 : x
  2. Step 2: Convert to fraction form
    648,414.72/972,156.33 = 306,668.43/x
  3. Step 3: Cross multiply
    648,414.72x = 972,156.33 × 306,668.43
  4. Step 4: Simplify right side
    648,414.72x = 298,129,655,435.66
  5. Step 5: Solve for x
    x = 298,129,655,435.66/648,414.72
  6. Step 6: Final answer
    x = 459,782.37

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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.