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Finding the Fourth Proportional to 1,659,852.30, 2,485,787.01 and 947,721.90

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Solution

The fourth proportional to 1,659,852.30, 2,485,787.01 and 947,721.90 is: 1,419,303.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659,852.30 : 2,485,787.01 = 947,721.90 : x
  2. Step 2: Convert to fraction form
    1,659,852.30/2,485,787.01 = 947,721.90/x
  3. Step 3: Cross multiply
    1,659,852.30x = 2,485,787.01 × 947,721.90
  4. Step 4: Simplify right side
    1,659,852.30x = 2,355,834,788,112.52
  5. Step 5: Solve for x
    x = 2,355,834,788,112.52/1,659,852.30
  6. Step 6: Final answer
    x = 1,419,303.87

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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.