Home / 817,785.28-1,226,875.56-256,819.78

Finding the Fourth Proportional to 817,785.28, 1,226,875.56 and 256,819.78

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Solution

The fourth proportional to 817,785.28, 1,226,875.56 and 256,819.78 is: 385,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,785.28 : 1,226,875.56 = 256,819.78 : x
  2. Step 2: Convert to fraction form
    817,785.28/1,226,875.56 = 256,819.78/x
  3. Step 3: Cross multiply
    817,785.28x = 1,226,875.56 × 256,819.78
  4. Step 4: Simplify right side
    817,785.28x = 315,085,911,406.58
  5. Step 5: Solve for x
    x = 315,085,911,406.58/817,785.28
  6. Step 6: Final answer
    x = 385,291.74

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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.