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Finding the Fourth Proportional to 682,368.60, 941,364.28 and 395,722.72

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Solution

The fourth proportional to 682,368.60, 941,364.28 and 395,722.72 is: 545,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,368.60 : 941,364.28 = 395,722.72 : x
  2. Step 2: Convert to fraction form
    682,368.60/941,364.28 = 395,722.72/x
  3. Step 3: Cross multiply
    682,368.60x = 941,364.28 × 395,722.72
  4. Step 4: Simplify right side
    682,368.60x = 372,519,233,392.44
  5. Step 5: Solve for x
    x = 372,519,233,392.44/682,368.60
  6. Step 6: Final answer
    x = 545,920.83

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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.