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Finding the Fourth Proportional to 802,930.50, 1,108,044.10 and 445,234.50

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Solution

The fourth proportional to 802,930.50, 1,108,044.10 and 445,234.50 is: 614,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,930.50 : 1,108,044.10 = 445,234.50 : x
  2. Step 2: Convert to fraction form
    802,930.50/1,108,044.10 = 445,234.50/x
  3. Step 3: Cross multiply
    802,930.50x = 1,108,044.10 × 445,234.50
  4. Step 4: Simplify right side
    802,930.50x = 493,339,460,841.45
  5. Step 5: Solve for x
    x = 493,339,460,841.45/802,930.50
  6. Step 6: Final answer
    x = 614,423.62

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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.