Home / 393,029.20-589,658.64-126,783.84

Finding the Fourth Proportional to 393,029.20, 589,658.64 and 126,783.84

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Solution

The fourth proportional to 393,029.20, 589,658.64 and 126,783.84 is: 190,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,029.20 : 589,658.64 = 126,783.84 : x
  2. Step 2: Convert to fraction form
    393,029.20/589,658.64 = 126,783.84/x
  3. Step 3: Cross multiply
    393,029.20x = 589,658.64 × 126,783.84
  4. Step 4: Simplify right side
    393,029.20x = 74,759,186,668.38
  5. Step 5: Solve for x
    x = 74,759,186,668.38/393,029.20
  6. Step 6: Final answer
    x = 190,212.81

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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.