Home / 1,389,627.63-1,917,248.94-777,683.16

Finding the Fourth Proportional to 1,389,627.63, 1,917,248.94 and 777,683.16

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Solution

The fourth proportional to 1,389,627.63, 1,917,248.94 and 777,683.16 is: 1,072,958.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,627.63 : 1,917,248.94 = 777,683.16 : x
  2. Step 2: Convert to fraction form
    1,389,627.63/1,917,248.94 = 777,683.16/x
  3. Step 3: Cross multiply
    1,389,627.63x = 1,917,248.94 × 777,683.16
  4. Step 4: Simplify right side
    1,389,627.63x = 1,491,012,214,165.85
  5. Step 5: Solve for x
    x = 1,491,012,214,165.85/1,389,627.63
  6. Step 6: Final answer
    x = 1,072,958.09

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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.