Home / 1,280,214.21-1,919,899.17-427,050.75

Finding the Fourth Proportional to 1,280,214.21, 1,919,899.17 and 427,050.75

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Solution

The fourth proportional to 1,280,214.21, 1,919,899.17 and 427,050.75 is: 640,435.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,214.21 : 1,919,899.17 = 427,050.75 : x
  2. Step 2: Convert to fraction form
    1,280,214.21/1,919,899.17 = 427,050.75/x
  3. Step 3: Cross multiply
    1,280,214.21x = 1,919,899.17 × 427,050.75
  4. Step 4: Simplify right side
    1,280,214.21x = 819,894,380,472.88
  5. Step 5: Solve for x
    x = 819,894,380,472.88/1,280,214.21
  6. Step 6: Final answer
    x = 640,435.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.