Home / 718,986.96-992,561.55-447,142.43

Finding the Fourth Proportional to 718,986.96, 992,561.55 and 447,142.43

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Solution

The fourth proportional to 718,986.96, 992,561.55 and 447,142.43 is: 617,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,986.96 : 992,561.55 = 447,142.43 : x
  2. Step 2: Convert to fraction form
    718,986.96/992,561.55 = 447,142.43/x
  3. Step 3: Cross multiply
    718,986.96x = 992,561.55 × 447,142.43
  4. Step 4: Simplify right side
    718,986.96x = 443,816,383,168.38
  5. Step 5: Solve for x
    x = 443,816,383,168.38/718,986.96
  6. Step 6: Final answer
    x = 617,280.16

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Double scale
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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.