Home / 1,222,467.41-1,686,920.64-678,560.39

Finding the Fourth Proportional to 1,222,467.41, 1,686,920.64 and 678,560.39

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Solution

The fourth proportional to 1,222,467.41, 1,686,920.64 and 678,560.39 is: 936,366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,467.41 : 1,686,920.64 = 678,560.39 : x
  2. Step 2: Convert to fraction form
    1,222,467.41/1,686,920.64 = 678,560.39/x
  3. Step 3: Cross multiply
    1,222,467.41x = 1,686,920.64 × 678,560.39
  4. Step 4: Simplify right side
    1,222,467.41x = 1,144,677,518,942.85
  5. Step 5: Solve for x
    x = 1,144,677,518,942.85/1,222,467.41
  6. Step 6: Final answer
    x = 936,366.49

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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.