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Finding the Fourth Proportional to 1,369,571.06, 1,890,613.44 and 818,481.24

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Solution

The fourth proportional to 1,369,571.06, 1,890,613.44 and 818,481.24 is: 1,129,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,571.06 : 1,890,613.44 = 818,481.24 : x
  2. Step 2: Convert to fraction form
    1,369,571.06/1,890,613.44 = 818,481.24/x
  3. Step 3: Cross multiply
    1,369,571.06x = 1,890,613.44 × 818,481.24
  4. Step 4: Simplify right side
    1,369,571.06x = 1,547,431,632,731.87
  5. Step 5: Solve for x
    x = 1,547,431,632,731.87/1,369,571.06
  6. Step 6: Final answer
    x = 1,129,865.90

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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.