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Finding the Fourth Proportional to 1,320,923.44, 1,823,723.40 and 908,147.44

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Solution

The fourth proportional to 1,320,923.44, 1,823,723.40 and 908,147.44 is: 1,253,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,923.44 : 1,823,723.40 = 908,147.44 : x
  2. Step 2: Convert to fraction form
    1,320,923.44/1,823,723.40 = 908,147.44/x
  3. Step 3: Cross multiply
    1,320,923.44x = 1,823,723.40 × 908,147.44
  4. Step 4: Simplify right side
    1,320,923.44x = 1,656,209,736,978.10
  5. Step 5: Solve for x
    x = 1,656,209,736,978.10/1,320,923.44
  6. Step 6: Final answer
    x = 1,253,827.20

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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.