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Finding the Fourth Proportional to 695,359.68, 959,517 and 389,393.52

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Solution

The fourth proportional to 695,359.68, 959,517 and 389,393.52 is: 537,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,359.68 : 959,517 = 389,393.52 : x
  2. Step 2: Convert to fraction form
    695,359.68/959,517 = 389,393.52/x
  3. Step 3: Cross multiply
    695,359.68x = 959,517 × 389,393.52
  4. Step 4: Simplify right side
    695,359.68x = 373,629,702,129.84
  5. Step 5: Solve for x
    x = 373,629,702,129.84/695,359.68
  6. Step 6: Final answer
    x = 537,318.62

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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.