Home / 840,705.17-1,160,198.78-478,181.27

Finding the Fourth Proportional to 840,705.17, 1,160,198.78 and 478,181.27

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Solution

The fourth proportional to 840,705.17, 1,160,198.78 and 478,181.27 is: 659,904.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,705.17 : 1,160,198.78 = 478,181.27 : x
  2. Step 2: Convert to fraction form
    840,705.17/1,160,198.78 = 478,181.27/x
  3. Step 3: Cross multiply
    840,705.17x = 1,160,198.78 × 478,181.27
  4. Step 4: Simplify right side
    840,705.17x = 554,785,317,880.95
  5. Step 5: Solve for x
    x = 554,785,317,880.95/840,705.17
  6. Step 6: Final answer
    x = 659,904.73

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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.