Home / 856,671.40-1,285,007.10-607,839.40

Finding the Fourth Proportional to 856,671.40, 1,285,007.10 and 607,839.40

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Solution

The fourth proportional to 856,671.40, 1,285,007.10 and 607,839.40 is: 911,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,671.40 : 1,285,007.10 = 607,839.40 : x
  2. Step 2: Convert to fraction form
    856,671.40/1,285,007.10 = 607,839.40/x
  3. Step 3: Cross multiply
    856,671.40x = 1,285,007.10 × 607,839.40
  4. Step 4: Simplify right side
    856,671.40x = 781,077,944,659.74
  5. Step 5: Solve for x
    x = 781,077,944,659.74/856,671.40
  6. Step 6: Final answer
    x = 911,759.10

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Double scale
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Similar ratio
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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.