Home / 1,222,767.19-1,687,471.42-678,903.05

Finding the Fourth Proportional to 1,222,767.19, 1,687,471.42 and 678,903.05

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Solution

The fourth proportional to 1,222,767.19, 1,687,471.42 and 678,903.05 is: 936,915.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,767.19 : 1,687,471.42 = 678,903.05 : x
  2. Step 2: Convert to fraction form
    1,222,767.19/1,687,471.42 = 678,903.05/x
  3. Step 3: Cross multiply
    1,222,767.19x = 1,687,471.42 × 678,903.05
  4. Step 4: Simplify right side
    1,222,767.19x = 1,145,629,496,347.25
  5. Step 5: Solve for x
    x = 1,145,629,496,347.25/1,222,767.19
  6. Step 6: Final answer
    x = 936,915.47

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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.