Home / 1,081,639.05-1,621,314.48-407,428.65

Finding the Fourth Proportional to 1,081,639.05, 1,621,314.48 and 407,428.65

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Solution

The fourth proportional to 1,081,639.05, 1,621,314.48 and 407,428.65 is: 610,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,639.05 : 1,621,314.48 = 407,428.65 : x
  2. Step 2: Convert to fraction form
    1,081,639.05/1,621,314.48 = 407,428.65/x
  3. Step 3: Cross multiply
    1,081,639.05x = 1,621,314.48 × 407,428.65
  4. Step 4: Simplify right side
    1,081,639.05x = 660,569,969,811.85
  5. Step 5: Solve for x
    x = 660,569,969,811.85/1,081,639.05
  6. Step 6: Final answer
    x = 610,712.02

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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.