Home / 680,996.25-1,021,116.92-315,859.59

Finding the Fourth Proportional to 680,996.25, 1,021,116.92 and 315,859.59

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Solution

The fourth proportional to 680,996.25, 1,021,116.92 and 315,859.59 is: 473,614.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,996.25 : 1,021,116.92 = 315,859.59 : x
  2. Step 2: Convert to fraction form
    680,996.25/1,021,116.92 = 315,859.59/x
  3. Step 3: Cross multiply
    680,996.25x = 1,021,116.92 × 315,859.59
  4. Step 4: Simplify right side
    680,996.25x = 322,529,570,113.97
  5. Step 5: Solve for x
    x = 322,529,570,113.97/680,996.25
  6. Step 6: Final answer
    x = 473,614.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.