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Finding the Fourth Proportional to 568,607.61, 784,682.30 and 310,486.35

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Solution

The fourth proportional to 568,607.61, 784,682.30 and 310,486.35 is: 428,473.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,607.61 : 784,682.30 = 310,486.35 : x
  2. Step 2: Convert to fraction form
    568,607.61/784,682.30 = 310,486.35/x
  3. Step 3: Cross multiply
    568,607.61x = 784,682.30 × 310,486.35
  4. Step 4: Simplify right side
    568,607.61x = 243,633,143,236.61
  5. Step 5: Solve for x
    x = 243,633,143,236.61/568,607.61
  6. Step 6: Final answer
    x = 428,473.24

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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.