Home / 1,215,111.38-1,676,853.70-678,567.38

Finding the Fourth Proportional to 1,215,111.38, 1,676,853.70 and 678,567.38

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Solution

The fourth proportional to 1,215,111.38, 1,676,853.70 and 678,567.38 is: 936,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,111.38 : 1,676,853.70 = 678,567.38 : x
  2. Step 2: Convert to fraction form
    1,215,111.38/1,676,853.70 = 678,567.38/x
  3. Step 3: Cross multiply
    1,215,111.38x = 1,676,853.70 × 678,567.38
  4. Step 4: Simplify right side
    1,215,111.38x = 1,137,858,211,771.62
  5. Step 5: Solve for x
    x = 1,137,858,211,771.62/1,215,111.38
  6. Step 6: Final answer
    x = 936,422.98

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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.