Home / 664,143.35-916,588.44-406,171.22

Finding the Fourth Proportional to 664,143.35, 916,588.44 and 406,171.22

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Solution

The fourth proportional to 664,143.35, 916,588.44 and 406,171.22 is: 560,559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,143.35 : 916,588.44 = 406,171.22 : x
  2. Step 2: Convert to fraction form
    664,143.35/916,588.44 = 406,171.22/x
  3. Step 3: Cross multiply
    664,143.35x = 916,588.44 × 406,171.22
  4. Step 4: Simplify right side
    664,143.35x = 372,291,844,912.70
  5. Step 5: Solve for x
    x = 372,291,844,912.70/664,143.35
  6. Step 6: Final answer
    x = 560,559.47

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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.