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Finding the Fourth Proportional to 568,490.88, 784,504.74 and 310,357.92

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Solution

The fourth proportional to 568,490.88, 784,504.74 and 310,357.92 is: 428,287.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,490.88 : 784,504.74 = 310,357.92 : x
  2. Step 2: Convert to fraction form
    568,490.88/784,504.74 = 310,357.92/x
  3. Step 3: Cross multiply
    568,490.88x = 784,504.74 × 310,357.92
  4. Step 4: Simplify right side
    568,490.88x = 243,477,259,336.54
  5. Step 5: Solve for x
    x = 243,477,259,336.54/568,490.88
  6. Step 6: Final answer
    x = 428,287.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.