Home / 1,689,450.12-2,330,856.90-1,281,126.60

Finding the Fourth Proportional to 1,689,450.12, 2,330,856.90 and 1,281,126.60

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Solution

The fourth proportional to 1,689,450.12, 2,330,856.90 and 1,281,126.60 is: 1,767,511.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,450.12 : 2,330,856.90 = 1,281,126.60 : x
  2. Step 2: Convert to fraction form
    1,689,450.12/2,330,856.90 = 1,281,126.60/x
  3. Step 3: Cross multiply
    1,689,450.12x = 2,330,856.90 × 1,281,126.60
  4. Step 4: Simplify right side
    1,689,450.12x = 2,986,122,775,383.54
  5. Step 5: Solve for x
    x = 2,986,122,775,383.54/1,689,450.12
  6. Step 6: Final answer
    x = 1,767,511.65

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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.