Home / 810,475.52-1,215,713.27-311,722.88

Finding the Fourth Proportional to 810,475.52, 1,215,713.27 and 311,722.88

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Solution

The fourth proportional to 810,475.52, 1,215,713.27 and 311,722.88 is: 467,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,475.52 : 1,215,713.27 = 311,722.88 : x
  2. Step 2: Convert to fraction form
    810,475.52/1,215,713.27 = 311,722.88/x
  3. Step 3: Cross multiply
    810,475.52x = 1,215,713.27 × 311,722.88
  4. Step 4: Simplify right side
    810,475.52x = 378,965,636,479.36
  5. Step 5: Solve for x
    x = 378,965,636,479.36/810,475.52
  6. Step 6: Final answer
    x = 467,584.31

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1.5x scale

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.