Home / 664,140.35-916,584.30-406,168.22

Finding the Fourth Proportional to 664,140.35, 916,584.30 and 406,168.22

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Solution

The fourth proportional to 664,140.35, 916,584.30 and 406,168.22 is: 560,555.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,140.35 : 916,584.30 = 406,168.22 : x
  2. Step 2: Convert to fraction form
    664,140.35/916,584.30 = 406,168.22/x
  3. Step 3: Cross multiply
    664,140.35x = 916,584.30 × 406,168.22
  4. Step 4: Simplify right side
    664,140.35x = 372,287,415,902.41
  5. Step 5: Solve for x
    x = 372,287,415,902.41/664,140.35
  6. Step 6: Final answer
    x = 560,555.33

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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.