Home / 1,280,199.27-1,919,876.79-427,035.82

Finding the Fourth Proportional to 1,280,199.27, 1,919,876.79 and 427,035.82

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Solution

The fourth proportional to 1,280,199.27, 1,919,876.79 and 427,035.82 is: 640,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,199.27 : 1,919,876.79 = 427,035.82 : x
  2. Step 2: Convert to fraction form
    1,280,199.27/1,919,876.79 = 427,035.82/x
  3. Step 3: Cross multiply
    1,280,199.27x = 1,919,876.79 × 427,035.82
  4. Step 4: Simplify right side
    1,280,199.27x = 819,856,159,316.62
  5. Step 5: Solve for x
    x = 819,856,159,316.62/1,280,199.27
  6. Step 6: Final answer
    x = 640,412.93

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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.