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Finding the Fourth Proportional to 1,200,772.40, 1,796,784.60 and 885,844.40

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Solution

The fourth proportional to 1,200,772.40, 1,796,784.60 and 885,844.40 is: 1,325,539.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,772.40 : 1,796,784.60 = 885,844.40 : x
  2. Step 2: Convert to fraction form
    1,200,772.40/1,796,784.60 = 885,844.40/x
  3. Step 3: Cross multiply
    1,200,772.40x = 1,796,784.60 × 885,844.40
  4. Step 4: Simplify right side
    1,200,772.40x = 1,591,671,575,916.24
  5. Step 5: Solve for x
    x = 1,591,671,575,916.24/1,200,772.40
  6. Step 6: Final answer
    x = 1,325,539.77

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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.