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Finding the Fourth Proportional to 695,969.23, 960,421.71 and 405,562.63

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Solution

The fourth proportional to 695,969.23, 960,421.71 and 405,562.63 is: 559,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,969.23 : 960,421.71 = 405,562.63 : x
  2. Step 2: Convert to fraction form
    695,969.23/960,421.71 = 405,562.63/x
  3. Step 3: Cross multiply
    695,969.23x = 960,421.71 × 405,562.63
  4. Step 4: Simplify right side
    695,969.23x = 389,511,154,616.70
  5. Step 5: Solve for x
    x = 389,511,154,616.70/695,969.23
  6. Step 6: Final answer
    x = 559,667.21

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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.