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Finding the Fourth Proportional to 1,919,163.90, 2,877,433.65 and 908,769.90

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Solution

The fourth proportional to 1,919,163.90, 2,877,433.65 and 908,769.90 is: 1,362,533.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,163.90 : 2,877,433.65 = 908,769.90 : x
  2. Step 2: Convert to fraction form
    1,919,163.90/2,877,433.65 = 908,769.90/x
  3. Step 3: Cross multiply
    1,919,163.90x = 2,877,433.65 × 908,769.90
  4. Step 4: Simplify right side
    1,919,163.90x = 2,614,925,090,367.13
  5. Step 5: Solve for x
    x = 2,614,925,090,367.13/1,919,163.90
  6. Step 6: Final answer
    x = 1,362,533.49

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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.