Home / 639,026.20-958,539.30-189,816.40

Finding the Fourth Proportional to 639,026.20, 958,539.30 and 189,816.40

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Solution

The fourth proportional to 639,026.20, 958,539.30 and 189,816.40 is: 284,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,026.20 : 958,539.30 = 189,816.40 : x
  2. Step 2: Convert to fraction form
    639,026.20/958,539.30 = 189,816.40/x
  3. Step 3: Cross multiply
    639,026.20x = 958,539.30 × 189,816.40
  4. Step 4: Simplify right side
    639,026.20x = 181,946,479,184.52
  5. Step 5: Solve for x
    x = 181,946,479,184.52/639,026.20
  6. Step 6: Final answer
    x = 284,724.60

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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.