Home / 399,768.28-599,967.10-186,426.43

Finding the Fourth Proportional to 399,768.28, 599,967.10 and 186,426.43

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Solution

The fourth proportional to 399,768.28, 599,967.10 and 186,426.43 is: 279,786.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,768.28 : 599,967.10 = 186,426.43 : x
  2. Step 2: Convert to fraction form
    399,768.28/599,967.10 = 186,426.43/x
  3. Step 3: Cross multiply
    399,768.28x = 599,967.10 × 186,426.43
  4. Step 4: Simplify right side
    399,768.28x = 111,849,723,303.57
  5. Step 5: Solve for x
    x = 111,849,723,303.57/399,768.28
  6. Step 6: Final answer
    x = 279,786.39

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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.