Home / 661,844.40-992,766.60-485,588.40

Finding the Fourth Proportional to 661,844.40, 992,766.60 and 485,588.40

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Solution

The fourth proportional to 661,844.40, 992,766.60 and 485,588.40 is: 728,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,844.40 : 992,766.60 = 485,588.40 : x
  2. Step 2: Convert to fraction form
    661,844.40/992,766.60 = 485,588.40/x
  3. Step 3: Cross multiply
    661,844.40x = 992,766.60 × 485,588.40
  4. Step 4: Simplify right side
    661,844.40x = 482,075,944,867.44
  5. Step 5: Solve for x
    x = 482,075,944,867.44/661,844.40
  6. Step 6: Final answer
    x = 728,382.60

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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.