Home / 828,911.30-1,244,288.55-513,724.10

Finding the Fourth Proportional to 828,911.30, 1,244,288.55 and 513,724.10

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Solution

The fourth proportional to 828,911.30, 1,244,288.55 and 513,724.10 is: 771,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,911.30 : 1,244,288.55 = 513,724.10 : x
  2. Step 2: Convert to fraction form
    828,911.30/1,244,288.55 = 513,724.10/x
  3. Step 3: Cross multiply
    828,911.30x = 1,244,288.55 × 513,724.10
  4. Step 4: Simplify right side
    828,911.30x = 639,221,015,489.06
  5. Step 5: Solve for x
    x = 639,221,015,489.06/828,911.30
  6. Step 6: Final answer
    x = 771,157.32

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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.