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Finding the Fourth Proportional to 1,226,479, 1,692,566.94 and 689,935

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Solution

The fourth proportional to 1,226,479, 1,692,566.94 and 689,935 is: 952,124.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,479 : 1,692,566.94 = 689,935 : x
  2. Step 2: Convert to fraction form
    1,226,479/1,692,566.94 = 689,935/x
  3. Step 3: Cross multiply
    1,226,479x = 1,692,566.94 × 689,935
  4. Step 4: Simplify right side
    1,226,479x = 1,167,761,171,748.90
  5. Step 5: Solve for x
    x = 1,167,761,171,748.90/1,226,479
  6. Step 6: Final answer
    x = 952,124.88

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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.