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Finding the Fourth Proportional to 1,335,822.80, 2,005,046.40 and 662,664.20

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Solution

The fourth proportional to 1,335,822.80, 2,005,046.40 and 662,664.20 is: 994,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,822.80 : 2,005,046.40 = 662,664.20 : x
  2. Step 2: Convert to fraction form
    1,335,822.80/2,005,046.40 = 662,664.20/x
  3. Step 3: Cross multiply
    1,335,822.80x = 2,005,046.40 × 662,664.20
  4. Step 4: Simplify right side
    1,335,822.80x = 1,328,672,468,618.88
  5. Step 5: Solve for x
    x = 1,328,672,468,618.88/1,335,822.80
  6. Step 6: Final answer
    x = 994,647.25

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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.