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Finding the Fourth Proportional to 2,340,629.76, 3,509,947.72 and 919,689.08

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Solution

The fourth proportional to 2,340,629.76, 3,509,947.72 and 919,689.08 is: 1,379,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340,629.76 : 3,509,947.72 = 919,689.08 : x
  2. Step 2: Convert to fraction form
    2,340,629.76/3,509,947.72 = 919,689.08/x
  3. Step 3: Cross multiply
    2,340,629.76x = 3,509,947.72 × 919,689.08
  4. Step 4: Simplify right side
    2,340,629.76x = 3,228,060,589,454.90
  5. Step 5: Solve for x
    x = 3,228,060,589,454.90/2,340,629.76
  6. Step 6: Final answer
    x = 1,379,141.91

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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.