Home / 394,989.78-592,546.08-128,688.24

Finding the Fourth Proportional to 394,989.78, 592,546.08 and 128,688.24

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Solution

The fourth proportional to 394,989.78, 592,546.08 and 128,688.24 is: 193,052.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,989.78 : 592,546.08 = 128,688.24 : x
  2. Step 2: Convert to fraction form
    394,989.78/592,546.08 = 128,688.24/x
  3. Step 3: Cross multiply
    394,989.78x = 592,546.08 × 128,688.24
  4. Step 4: Simplify right side
    394,989.78x = 76,253,712,154.10
  5. Step 5: Solve for x
    x = 76,253,712,154.10/394,989.78
  6. Step 6: Final answer
    x = 193,052.37

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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.