Home / 639,029.20-958,543.80-195,739.60

Finding the Fourth Proportional to 639,029.20, 958,543.80 and 195,739.60

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Solution

The fourth proportional to 639,029.20, 958,543.80 and 195,739.60 is: 293,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,029.20 : 958,543.80 = 195,739.60 : x
  2. Step 2: Convert to fraction form
    639,029.20/958,543.80 = 195,739.60/x
  3. Step 3: Cross multiply
    639,029.20x = 958,543.80 × 195,739.60
  4. Step 4: Simplify right side
    639,029.20x = 187,624,979,994.48
  5. Step 5: Solve for x
    x = 187,624,979,994.48/639,029.20
  6. Step 6: Final answer
    x = 293,609.40

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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.