Home / 1,222,297.29-1,686,746.23-678,439.60

Finding the Fourth Proportional to 1,222,297.29, 1,686,746.23 and 678,439.60

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Solution

The fourth proportional to 1,222,297.29, 1,686,746.23 and 678,439.60 is: 936,233.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,297.29 : 1,686,746.23 = 678,439.60 : x
  2. Step 2: Convert to fraction form
    1,222,297.29/1,686,746.23 = 678,439.60/x
  3. Step 3: Cross multiply
    1,222,297.29x = 1,686,746.23 × 678,439.60
  4. Step 4: Simplify right side
    1,222,297.29x = 1,144,355,431,669.74
  5. Step 5: Solve for x
    x = 1,144,355,431,669.74/1,222,297.29
  6. Step 6: Final answer
    x = 936,233.31

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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.