Home / 876,635.60-1,314,953.40-640,439.60

Finding the Fourth Proportional to 876,635.60, 1,314,953.40 and 640,439.60

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Solution

The fourth proportional to 876,635.60, 1,314,953.40 and 640,439.60 is: 960,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,635.60 : 1,314,953.40 = 640,439.60 : x
  2. Step 2: Convert to fraction form
    876,635.60/1,314,953.40 = 640,439.60/x
  3. Step 3: Cross multiply
    876,635.60x = 1,314,953.40 × 640,439.60
  4. Step 4: Simplify right side
    876,635.60x = 842,148,229,514.64
  5. Step 5: Solve for x
    x = 842,148,229,514.64/876,635.60
  6. Step 6: Final answer
    x = 960,659.40

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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.