Home / 828,139.60-1,242,209.40-576,197.20

Finding the Fourth Proportional to 828,139.60, 1,242,209.40 and 576,197.20

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Solution

The fourth proportional to 828,139.60, 1,242,209.40 and 576,197.20 is: 864,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,139.60 : 1,242,209.40 = 576,197.20 : x
  2. Step 2: Convert to fraction form
    828,139.60/1,242,209.40 = 576,197.20/x
  3. Step 3: Cross multiply
    828,139.60x = 1,242,209.40 × 576,197.20
  4. Step 4: Simplify right side
    828,139.60x = 715,757,578,093.68
  5. Step 5: Solve for x
    x = 715,757,578,093.68/828,139.60
  6. Step 6: Final answer
    x = 864,295.80

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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.