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Finding the Fourth Proportional to 568,636.40, 784,434.66 and 339,031.73

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Solution

The fourth proportional to 568,636.40, 784,434.66 and 339,031.73 is: 467,694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,636.40 : 784,434.66 = 339,031.73 : x
  2. Step 2: Convert to fraction form
    568,636.40/784,434.66 = 339,031.73/x
  3. Step 3: Cross multiply
    568,636.40x = 784,434.66 × 339,031.73
  4. Step 4: Simplify right side
    568,636.40x = 265,948,239,851.76
  5. Step 5: Solve for x
    x = 265,948,239,851.76/568,636.40
  6. Step 6: Final answer
    x = 467,694.72

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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.