Home / 828,305.20-1,242,457.80-615,728.80

Finding the Fourth Proportional to 828,305.20, 1,242,457.80 and 615,728.80

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Solution

The fourth proportional to 828,305.20, 1,242,457.80 and 615,728.80 is: 923,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,305.20 : 1,242,457.80 = 615,728.80 : x
  2. Step 2: Convert to fraction form
    828,305.20/1,242,457.80 = 615,728.80/x
  3. Step 3: Cross multiply
    828,305.20x = 1,242,457.80 × 615,728.80
  4. Step 4: Simplify right side
    828,305.20x = 765,017,050,244.64
  5. Step 5: Solve for x
    x = 765,017,050,244.64/828,305.20
  6. Step 6: Final answer
    x = 923,593.20

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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.