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Finding the Fourth Proportional to 1,301,869.88, 1,796,769.06 and 728,946.98

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Solution

The fourth proportional to 1,301,869.88, 1,796,769.06 and 728,946.98 is: 1,006,052.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,869.88 : 1,796,769.06 = 728,946.98 : x
  2. Step 2: Convert to fraction form
    1,301,869.88/1,796,769.06 = 728,946.98/x
  3. Step 3: Cross multiply
    1,301,869.88x = 1,796,769.06 × 728,946.98
  4. Step 4: Simplify right side
    1,301,869.88x = 1,309,749,380,044.44
  5. Step 5: Solve for x
    x = 1,309,749,380,044.44/1,301,869.88
  6. Step 6: Final answer
    x = 1,006,052.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.