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Finding the Fourth Proportional to 672,469, 928,007.22 and 370,669.48

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Solution

The fourth proportional to 672,469, 928,007.22 and 370,669.48 is: 511,523.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,469 : 928,007.22 = 370,669.48 : x
  2. Step 2: Convert to fraction form
    672,469/928,007.22 = 370,669.48/x
  3. Step 3: Cross multiply
    672,469x = 928,007.22 × 370,669.48
  4. Step 4: Simplify right side
    672,469x = 343,983,953,673.65
  5. Step 5: Solve for x
    x = 343,983,953,673.65/672,469
  6. Step 6: Final answer
    x = 511,523.88

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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.