Home / 817,786.28-1,226,877.06-256,820.78

Finding the Fourth Proportional to 817,786.28, 1,226,877.06 and 256,820.78

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Solution

The fourth proportional to 817,786.28, 1,226,877.06 and 256,820.78 is: 385,293.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,786.28 : 1,226,877.06 = 256,820.78 : x
  2. Step 2: Convert to fraction form
    817,786.28/1,226,877.06 = 256,820.78/x
  3. Step 3: Cross multiply
    817,786.28x = 1,226,877.06 × 256,820.78
  4. Step 4: Simplify right side
    817,786.28x = 315,087,523,513.31
  5. Step 5: Solve for x
    x = 315,087,523,513.31/817,786.28
  6. Step 6: Final answer
    x = 385,293.24

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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.