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Finding the Fourth Proportional to 695,510.96, 959,817.30 and 389,584.70

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Solution

The fourth proportional to 695,510.96, 959,817.30 and 389,584.70 is: 537,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,510.96 : 959,817.30 = 389,584.70 : x
  2. Step 2: Convert to fraction form
    695,510.96/959,817.30 = 389,584.70/x
  3. Step 3: Cross multiply
    695,510.96x = 959,817.30 × 389,584.70
  4. Step 4: Simplify right side
    695,510.96x = 373,930,134,875.31
  5. Step 5: Solve for x
    x = 373,930,134,875.31/695,510.96
  6. Step 6: Final answer
    x = 537,633.71

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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.