Home / 817,778.32-1,226,865.12-256,812.80

Finding the Fourth Proportional to 817,778.32, 1,226,865.12 and 256,812.80

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Solution

The fourth proportional to 817,778.32, 1,226,865.12 and 256,812.80 is: 385,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,778.32 : 1,226,865.12 = 256,812.80 : x
  2. Step 2: Convert to fraction form
    817,778.32/1,226,865.12 = 256,812.80/x
  3. Step 3: Cross multiply
    817,778.32x = 1,226,865.12 × 256,812.80
  4. Step 4: Simplify right side
    817,778.32x = 315,074,666,689.54
  5. Step 5: Solve for x
    x = 315,074,666,689.54/817,778.32
  6. Step 6: Final answer
    x = 385,281.27

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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.