Home / 821,275.27-1,231,103.26-288,422.65

Finding the Fourth Proportional to 821,275.27, 1,231,103.26 and 288,422.65

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Solution

The fourth proportional to 821,275.27, 1,231,103.26 and 288,422.65 is: 432,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,275.27 : 1,231,103.26 = 288,422.65 : x
  2. Step 2: Convert to fraction form
    821,275.27/1,231,103.26 = 288,422.65/x
  3. Step 3: Cross multiply
    821,275.27x = 1,231,103.26 × 288,422.65
  4. Step 4: Simplify right side
    821,275.27x = 355,078,064,672.84
  5. Step 5: Solve for x
    x = 355,078,064,672.84/821,275.27
  6. Step 6: Final answer
    x = 432,349.64

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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.