Home / 1,222,254.38-1,686,698.34-678,394.91

Finding the Fourth Proportional to 1,222,254.38, 1,686,698.34 and 678,394.91

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Solution

The fourth proportional to 1,222,254.38, 1,686,698.34 and 678,394.91 is: 936,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,254.38 : 1,686,698.34 = 678,394.91 : x
  2. Step 2: Convert to fraction form
    1,222,254.38/1,686,698.34 = 678,394.91/x
  3. Step 3: Cross multiply
    1,222,254.38x = 1,686,698.34 × 678,394.91
  4. Step 4: Simplify right side
    1,222,254.38x = 1,144,247,568,561.45
  5. Step 5: Solve for x
    x = 1,144,247,568,561.45/1,222,254.38
  6. Step 6: Final answer
    x = 936,177.92

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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.