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Finding the Fourth Proportional to 1,262,081.04, 1,741,742.40 and 689,174.40

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Solution

The fourth proportional to 1,262,081.04, 1,741,742.40 and 689,174.40 is: 951,099.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,081.04 : 1,741,742.40 = 689,174.40 : x
  2. Step 2: Convert to fraction form
    1,262,081.04/1,741,742.40 = 689,174.40/x
  3. Step 3: Cross multiply
    1,262,081.04x = 1,741,742.40 × 689,174.40
  4. Step 4: Simplify right side
    1,262,081.04x = 1,200,364,273,474.56
  5. Step 5: Solve for x
    x = 1,200,364,273,474.56/1,262,081.04
  6. Step 6: Final answer
    x = 951,099.20

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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.