Home / 394,710.23-591,925.62-128,421.11

Finding the Fourth Proportional to 394,710.23, 591,925.62 and 128,421.11

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Solution

The fourth proportional to 394,710.23, 591,925.62 and 128,421.11 is: 192,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,710.23 : 591,925.62 = 128,421.11 : x
  2. Step 2: Convert to fraction form
    394,710.23/591,925.62 = 128,421.11/x
  3. Step 3: Cross multiply
    394,710.23x = 591,925.62 × 128,421.11
  4. Step 4: Simplify right side
    394,710.23x = 76,015,745,157.84
  5. Step 5: Solve for x
    x = 76,015,745,157.84/394,710.23
  6. Step 6: Final answer
    x = 192,586.20

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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.