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Finding the Fourth Proportional to 1,979,283.87, 2,968,728.93 and 914,310.54

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Solution

The fourth proportional to 1,979,283.87, 2,968,728.93 and 914,310.54 is: 1,371,374.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,283.87 : 2,968,728.93 = 914,310.54 : x
  2. Step 2: Convert to fraction form
    1,979,283.87/2,968,728.93 = 914,310.54/x
  3. Step 3: Cross multiply
    1,979,283.87x = 2,968,728.93 × 914,310.54
  4. Step 4: Simplify right side
    1,979,283.87x = 2,714,340,151,101.92
  5. Step 5: Solve for x
    x = 2,714,340,151,101.92/1,979,283.87
  6. Step 6: Final answer
    x = 1,371,374.87

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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.