Home / 911,956.48-1,367,953.92-312,914.56

Finding the Fourth Proportional to 911,956.48, 1,367,953.92 and 312,914.56

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Solution

The fourth proportional to 911,956.48, 1,367,953.92 and 312,914.56 is: 469,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,956.48 : 1,367,953.92 = 312,914.56 : x
  2. Step 2: Convert to fraction form
    911,956.48/1,367,953.92 = 312,914.56/x
  3. Step 3: Cross multiply
    911,956.48x = 1,367,953.92 × 312,914.56
  4. Step 4: Simplify right side
    911,956.48x = 428,052,698,977.08
  5. Step 5: Solve for x
    x = 428,052,698,977.08/911,956.48
  6. Step 6: Final answer
    x = 469,378.43

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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.