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Finding the Fourth Proportional to 568,439.10, 784,447.02 and 313,790.58

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Solution

The fourth proportional to 568,439.10, 784,447.02 and 313,790.58 is: 433,031.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,439.10 : 784,447.02 = 313,790.58 : x
  2. Step 2: Convert to fraction form
    568,439.10/784,447.02 = 313,790.58/x
  3. Step 3: Cross multiply
    568,439.10x = 784,447.02 × 313,790.58
  4. Step 4: Simplify right side
    568,439.10x = 246,152,085,385.07
  5. Step 5: Solve for x
    x = 246,152,085,385.07/568,439.10
  6. Step 6: Final answer
    x = 433,031.59

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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.