Home / 821,966.20-1,134,215.10-454,393.86

Finding the Fourth Proportional to 821,966.20, 1,134,215.10 and 454,393.86

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Solution

The fourth proportional to 821,966.20, 1,134,215.10 and 454,393.86 is: 627,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,966.20 : 1,134,215.10 = 454,393.86 : x
  2. Step 2: Convert to fraction form
    821,966.20/1,134,215.10 = 454,393.86/x
  3. Step 3: Cross multiply
    821,966.20x = 1,134,215.10 × 454,393.86
  4. Step 4: Simplify right side
    821,966.20x = 515,380,377,359.29
  5. Step 5: Solve for x
    x = 515,380,377,359.29/821,966.20
  6. Step 6: Final answer
    x = 627,009.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.