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Finding the Fourth Proportional to 695,317.94, 959,459.42 and 389,351.78

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Solution

The fourth proportional to 695,317.94, 959,459.42 and 389,351.78 is: 537,261.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,317.94 : 959,459.42 = 389,351.78 : x
  2. Step 2: Convert to fraction form
    695,317.94/959,459.42 = 389,351.78/x
  3. Step 3: Cross multiply
    695,317.94x = 959,459.42 × 389,351.78
  4. Step 4: Simplify right side
    695,317.94x = 373,567,233,014.77
  5. Step 5: Solve for x
    x = 373,567,233,014.77/695,317.94
  6. Step 6: Final answer
    x = 537,261.03

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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.