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Finding the Fourth Proportional to 568,390.64, 784,379.16 and 313,741.88

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Solution

The fourth proportional to 568,390.64, 784,379.16 and 313,741.88 is: 432,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,390.64 : 784,379.16 = 313,741.88 : x
  2. Step 2: Convert to fraction form
    568,390.64/784,379.16 = 313,741.88/x
  3. Step 3: Cross multiply
    568,390.64x = 784,379.16 × 313,741.88
  4. Step 4: Simplify right side
    568,390.64x = 246,092,592,291.22
  5. Step 5: Solve for x
    x = 246,092,592,291.22/568,390.64
  6. Step 6: Final answer
    x = 432,963.84

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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.