Home / 836,470.40-1,253,021.60-386,571.68

Finding the Fourth Proportional to 836,470.40, 1,253,021.60 and 386,571.68

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Solution

The fourth proportional to 836,470.40, 1,253,021.60 and 386,571.68 is: 579,079.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,470.40 : 1,253,021.60 = 386,571.68 : x
  2. Step 2: Convert to fraction form
    836,470.40/1,253,021.60 = 386,571.68/x
  3. Step 3: Cross multiply
    836,470.40x = 1,253,021.60 × 386,571.68
  4. Step 4: Simplify right side
    836,470.40x = 484,382,664,988.29
  5. Step 5: Solve for x
    x = 484,382,664,988.29/836,470.40
  6. Step 6: Final answer
    x = 579,079.27

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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.