Home / 657,105.20-985,657.80-447,153.20

Finding the Fourth Proportional to 657,105.20, 985,657.80 and 447,153.20

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Solution

The fourth proportional to 657,105.20, 985,657.80 and 447,153.20 is: 670,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,105.20 : 985,657.80 = 447,153.20 : x
  2. Step 2: Convert to fraction form
    657,105.20/985,657.80 = 447,153.20/x
  3. Step 3: Cross multiply
    657,105.20x = 985,657.80 × 447,153.20
  4. Step 4: Simplify right side
    657,105.20x = 440,740,039,374.96
  5. Step 5: Solve for x
    x = 440,740,039,374.96/657,105.20
  6. Step 6: Final answer
    x = 670,729.80

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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.