Home / 2,638,926.78-3,641,703.75-1,431,676.86

Finding the Fourth Proportional to 2,638,926.78, 3,641,703.75 and 1,431,676.86

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Solution

The fourth proportional to 2,638,926.78, 3,641,703.75 and 1,431,676.86 is: 1,975,705.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638,926.78 : 3,641,703.75 = 1,431,676.86 : x
  2. Step 2: Convert to fraction form
    2,638,926.78/3,641,703.75 = 1,431,676.86/x
  3. Step 3: Cross multiply
    2,638,926.78x = 3,641,703.75 × 1,431,676.86
  4. Step 4: Simplify right side
    2,638,926.78x = 5,213,742,989,850.23
  5. Step 5: Solve for x
    x = 5,213,742,989,850.23/2,638,926.78
  6. Step 6: Final answer
    x = 1,975,705.82

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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.