Home / 817,701.60-1,226,552.40-640,360.20

Finding the Fourth Proportional to 817,701.60, 1,226,552.40 and 640,360.20

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Solution

The fourth proportional to 817,701.60, 1,226,552.40 and 640,360.20 is: 960,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,701.60 : 1,226,552.40 = 640,360.20 : x
  2. Step 2: Convert to fraction form
    817,701.60/1,226,552.40 = 640,360.20/x
  3. Step 3: Cross multiply
    817,701.60x = 1,226,552.40 × 640,360.20
  4. Step 4: Simplify right side
    817,701.60x = 785,435,340,174.48
  5. Step 5: Solve for x
    x = 785,435,340,174.48/817,701.60
  6. Step 6: Final answer
    x = 960,540.30

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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.