Home / 1,913,207.78-2,640,127.10-1,188,039.96

Finding the Fourth Proportional to 1,913,207.78, 2,640,127.10 and 1,188,039.96

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Solution

The fourth proportional to 1,913,207.78, 2,640,127.10 and 1,188,039.96 is: 1,639,433.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,207.78 : 2,640,127.10 = 1,188,039.96 : x
  2. Step 2: Convert to fraction form
    1,913,207.78/2,640,127.10 = 1,188,039.96/x
  3. Step 3: Cross multiply
    1,913,207.78x = 2,640,127.10 × 1,188,039.96
  4. Step 4: Simplify right side
    1,913,207.78x = 3,136,576,494,278.92
  5. Step 5: Solve for x
    x = 3,136,576,494,278.92/1,913,207.78
  6. Step 6: Final answer
    x = 1,639,433.27

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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.