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Finding the Fourth Proportional to 693,673.30, 957,003.39 and 421,641.96

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Solution

The fourth proportional to 693,673.30, 957,003.39 and 421,641.96 is: 581,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,673.30 : 957,003.39 = 421,641.96 : x
  2. Step 2: Convert to fraction form
    693,673.30/957,003.39 = 421,641.96/x
  3. Step 3: Cross multiply
    693,673.30x = 957,003.39 × 421,641.96
  4. Step 4: Simplify right side
    693,673.30x = 403,512,781,497.48
  5. Step 5: Solve for x
    x = 403,512,781,497.48/693,673.30
  6. Step 6: Final answer
    x = 581,704.36

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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.