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Finding the Fourth Proportional to 1,423,589.22, 1,964,552.94 and 779,009.49

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Solution

The fourth proportional to 1,423,589.22, 1,964,552.94 and 779,009.49 is: 1,075,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,589.22 : 1,964,552.94 = 779,009.49 : x
  2. Step 2: Convert to fraction form
    1,423,589.22/1,964,552.94 = 779,009.49/x
  3. Step 3: Cross multiply
    1,423,589.22x = 1,964,552.94 × 779,009.49
  4. Step 4: Simplify right side
    1,423,589.22x = 1,530,405,383,867.40
  5. Step 5: Solve for x
    x = 1,530,405,383,867.40/1,423,589.22
  6. Step 6: Final answer
    x = 1,075,033.00

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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.