Home / 811,928.20-1,217,892.30-251,019.40

Finding the Fourth Proportional to 811,928.20, 1,217,892.30 and 251,019.40

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Solution

The fourth proportional to 811,928.20, 1,217,892.30 and 251,019.40 is: 376,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,928.20 : 1,217,892.30 = 251,019.40 : x
  2. Step 2: Convert to fraction form
    811,928.20/1,217,892.30 = 251,019.40/x
  3. Step 3: Cross multiply
    811,928.20x = 1,217,892.30 × 251,019.40
  4. Step 4: Simplify right side
    811,928.20x = 305,714,594,410.62
  5. Step 5: Solve for x
    x = 305,714,594,410.62/811,928.20
  6. Step 6: Final answer
    x = 376,529.10

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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.