Home / 1,396,980.72-1,928,065.32-824,161.68

Finding the Fourth Proportional to 1,396,980.72, 1,928,065.32 and 824,161.68

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Solution

The fourth proportional to 1,396,980.72, 1,928,065.32 and 824,161.68 is: 1,137,479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,980.72 : 1,928,065.32 = 824,161.68 : x
  2. Step 2: Convert to fraction form
    1,396,980.72/1,928,065.32 = 824,161.68/x
  3. Step 3: Cross multiply
    1,396,980.72x = 1,928,065.32 × 824,161.68
  4. Step 4: Simplify right side
    1,396,980.72x = 1,589,037,553,280.94
  5. Step 5: Solve for x
    x = 1,589,037,553,280.94/1,396,980.72
  6. Step 6: Final answer
    x = 1,137,479.95

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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.