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Finding the Fourth Proportional to 684,506.17, 1,026,761 and 279,698.39

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Solution

The fourth proportional to 684,506.17, 1,026,761 and 279,698.39 is: 419,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,506.17 : 1,026,761 = 279,698.39 : x
  2. Step 2: Convert to fraction form
    684,506.17/1,026,761 = 279,698.39/x
  3. Step 3: Cross multiply
    684,506.17x = 1,026,761 × 279,698.39
  4. Step 4: Simplify right side
    684,506.17x = 287,183,398,614.79
  5. Step 5: Solve for x
    x = 287,183,398,614.79/684,506.17
  6. Step 6: Final answer
    x = 419,548.30

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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.