Home / 681,739.20-940,870.08-409,895.64

Finding the Fourth Proportional to 681,739.20, 940,870.08 and 409,895.64

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Solution

The fourth proportional to 681,739.20, 940,870.08 and 409,895.64 is: 565,698.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,739.20 : 940,870.08 = 409,895.64 : x
  2. Step 2: Convert to fraction form
    681,739.20/940,870.08 = 409,895.64/x
  3. Step 3: Cross multiply
    681,739.20x = 940,870.08 × 409,895.64
  4. Step 4: Simplify right side
    681,739.20x = 385,658,543,598.45
  5. Step 5: Solve for x
    x = 385,658,543,598.45/681,739.20
  6. Step 6: Final answer
    x = 565,698.06

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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.