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Finding the Fourth Proportional to 695,912.16, 960,326.64 and 394,108.32

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Solution

The fourth proportional to 695,912.16, 960,326.64 and 394,108.32 is: 543,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,912.16 : 960,326.64 = 394,108.32 : x
  2. Step 2: Convert to fraction form
    695,912.16/960,326.64 = 394,108.32/x
  3. Step 3: Cross multiply
    695,912.16x = 960,326.64 × 394,108.32
  4. Step 4: Simplify right side
    695,912.16x = 378,472,718,741.65
  5. Step 5: Solve for x
    x = 378,472,718,741.65/695,912.16
  6. Step 6: Final answer
    x = 543,851.28

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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.