Home / 380,725.20-570,685.89-127,765.83

Finding the Fourth Proportional to 380,725.20, 570,685.89 and 127,765.83

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Solution

The fourth proportional to 380,725.20, 570,685.89 and 127,765.83 is: 191,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,725.20 : 570,685.89 = 127,765.83 : x
  2. Step 2: Convert to fraction form
    380,725.20/570,685.89 = 127,765.83/x
  3. Step 3: Cross multiply
    380,725.20x = 570,685.89 × 127,765.83
  4. Step 4: Simplify right side
    380,725.20x = 72,914,156,405.14
  5. Step 5: Solve for x
    x = 72,914,156,405.14/380,725.20
  6. Step 6: Final answer
    x = 191,513.87

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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.