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Finding the Fourth Proportional to 1,978,293.02, 2,962,789.29 and 964,237.11

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Solution

The fourth proportional to 1,978,293.02, 2,962,789.29 and 964,237.11 is: 1,444,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,293.02 : 2,962,789.29 = 964,237.11 : x
  2. Step 2: Convert to fraction form
    1,978,293.02/2,962,789.29 = 964,237.11/x
  3. Step 3: Cross multiply
    1,978,293.02x = 2,962,789.29 × 964,237.11
  4. Step 4: Simplify right side
    1,978,293.02x = 2,856,831,382,528.55
  5. Step 5: Solve for x
    x = 2,856,831,382,528.55/1,978,293.02
  6. Step 6: Final answer
    x = 1,444,089.10

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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.