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Finding the Fourth Proportional to 568,820.91, 784,968.19 and 310,698.02

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Solution

The fourth proportional to 568,820.91, 784,968.19 and 310,698.02 is: 428,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,820.91 : 784,968.19 = 310,698.02 : x
  2. Step 2: Convert to fraction form
    568,820.91/784,968.19 = 310,698.02/x
  3. Step 3: Cross multiply
    568,820.91x = 784,968.19 × 310,698.02
  4. Step 4: Simplify right side
    568,820.91x = 243,888,062,395.98
  5. Step 5: Solve for x
    x = 243,888,062,395.98/568,820.91
  6. Step 6: Final answer
    x = 428,760.72

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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.