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Finding the Fourth Proportional to 1,286,672.23, 1,926,957.48 and 1,019,573.92

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Solution

The fourth proportional to 1,286,672.23, 1,926,957.48 and 1,019,573.92 is: 1,526,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,672.23 : 1,926,957.48 = 1,019,573.92 : x
  2. Step 2: Convert to fraction form
    1,286,672.23/1,926,957.48 = 1,019,573.92/x
  3. Step 3: Cross multiply
    1,286,672.23x = 1,926,957.48 × 1,019,573.92
  4. Step 4: Simplify right side
    1,286,672.23x = 1,964,675,591,556.92
  5. Step 5: Solve for x
    x = 1,964,675,591,556.92/1,286,672.23
  6. Step 6: Final answer
    x = 1,526,943.34

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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.