Home / 751,769.43-1,128,616.82-645,831.15

Finding the Fourth Proportional to 751,769.43, 1,128,616.82 and 645,831.15

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Solution

The fourth proportional to 751,769.43, 1,128,616.82 and 645,831.15 is: 969,573.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,769.43 : 1,128,616.82 = 645,831.15 : x
  2. Step 2: Convert to fraction form
    751,769.43/1,128,616.82 = 645,831.15/x
  3. Step 3: Cross multiply
    751,769.43x = 1,128,616.82 × 645,831.15
  4. Step 4: Simplify right side
    751,769.43x = 728,895,898,769.94
  5. Step 5: Solve for x
    x = 728,895,898,769.94/751,769.43
  6. Step 6: Final answer
    x = 969,573.74

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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.