Home / 681,275.55-940,115.28-409,181.77

Finding the Fourth Proportional to 681,275.55, 940,115.28 and 409,181.77

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Solution

The fourth proportional to 681,275.55, 940,115.28 and 409,181.77 is: 564,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,275.55 : 940,115.28 = 409,181.77 : x
  2. Step 2: Convert to fraction form
    681,275.55/940,115.28 = 409,181.77/x
  3. Step 3: Cross multiply
    681,275.55x = 940,115.28 × 409,181.77
  4. Step 4: Simplify right side
    681,275.55x = 384,678,034,274.45
  5. Step 5: Solve for x
    x = 384,678,034,274.45/681,275.55
  6. Step 6: Final answer
    x = 564,643.83

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.