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Finding the Fourth Proportional to 1,301,868.88, 1,796,767.68 and 728,945.98

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Solution

The fourth proportional to 1,301,868.88, 1,796,767.68 and 728,945.98 is: 1,006,051.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,868.88 : 1,796,767.68 = 728,945.98 : x
  2. Step 2: Convert to fraction form
    1,301,868.88/1,796,767.68 = 728,945.98/x
  3. Step 3: Cross multiply
    1,301,868.88x = 1,796,767.68 × 728,945.98
  4. Step 4: Simplify right side
    1,301,868.88x = 1,309,746,577,329.93
  5. Step 5: Solve for x
    x = 1,309,746,577,329.93/1,301,868.88
  6. Step 6: Final answer
    x = 1,006,051.07

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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.