Home / 657,964.20-985,196.70-420,018.60

Finding the Fourth Proportional to 657,964.20, 985,196.70 and 420,018.60

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Solution

The fourth proportional to 657,964.20, 985,196.70 and 420,018.60 is: 628,911.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,964.20 : 985,196.70 = 420,018.60 : x
  2. Step 2: Convert to fraction form
    657,964.20/985,196.70 = 420,018.60/x
  3. Step 3: Cross multiply
    657,964.20x = 985,196.70 × 420,018.60
  4. Step 4: Simplify right side
    657,964.20x = 413,800,938,658.62
  5. Step 5: Solve for x
    x = 413,800,938,658.62/657,964.20
  6. Step 6: Final answer
    x = 628,911.02

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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.