Home / 657,128.70-985,693.05-447,176.70

Finding the Fourth Proportional to 657,128.70, 985,693.05 and 447,176.70

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Solution

The fourth proportional to 657,128.70, 985,693.05 and 447,176.70 is: 670,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,128.70 : 985,693.05 = 447,176.70 : x
  2. Step 2: Convert to fraction form
    657,128.70/985,693.05 = 447,176.70/x
  3. Step 3: Cross multiply
    657,128.70x = 985,693.05 × 447,176.70
  4. Step 4: Simplify right side
    657,128.70x = 440,778,965,311.94
  5. Step 5: Solve for x
    x = 440,778,965,311.94/657,128.70
  6. Step 6: Final answer
    x = 670,765.05

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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.