Home / 1,689,449.87-2,330,856.56-1,281,126.35

Finding the Fourth Proportional to 1,689,449.87, 2,330,856.56 and 1,281,126.35

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Solution

The fourth proportional to 1,689,449.87, 2,330,856.56 and 1,281,126.35 is: 1,767,511.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,449.87 : 2,330,856.56 = 1,281,126.35 : x
  2. Step 2: Convert to fraction form
    1,689,449.87/2,330,856.56 = 1,281,126.35/x
  3. Step 3: Cross multiply
    1,689,449.87x = 2,330,856.56 × 1,281,126.35
  4. Step 4: Simplify right side
    1,689,449.87x = 2,986,121,750,680.72
  5. Step 5: Solve for x
    x = 2,986,121,750,680.72/1,689,449.87
  6. Step 6: Final answer
    x = 1,767,511.31

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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.