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Finding the Fourth Proportional to 826,620.10, 1,239,930.15 and 353,353.30

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Solution

The fourth proportional to 826,620.10, 1,239,930.15 and 353,353.30 is: 530,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,620.10 : 1,239,930.15 = 353,353.30 : x
  2. Step 2: Convert to fraction form
    826,620.10/1,239,930.15 = 353,353.30/x
  3. Step 3: Cross multiply
    826,620.10x = 1,239,930.15 × 353,353.30
  4. Step 4: Simplify right side
    826,620.10x = 438,133,410,272.00
  5. Step 5: Solve for x
    x = 438,133,410,272.00/826,620.10
  6. Step 6: Final answer
    x = 530,029.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.