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Finding the Fourth Proportional to 568,605.36, 784,679.19 and 310,484.10

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Solution

The fourth proportional to 568,605.36, 784,679.19 and 310,484.10 is: 428,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,605.36 : 784,679.19 = 310,484.10 : x
  2. Step 2: Convert to fraction form
    568,605.36/784,679.19 = 310,484.10/x
  3. Step 3: Cross multiply
    568,605.36x = 784,679.19 × 310,484.10
  4. Step 4: Simplify right side
    568,605.36x = 243,630,412,095.88
  5. Step 5: Solve for x
    x = 243,630,412,095.88/568,605.36
  6. Step 6: Final answer
    x = 428,470.13

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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.