Home / 1,220,201.78-1,683,875.55-668,916.52

Finding the Fourth Proportional to 1,220,201.78, 1,683,875.55 and 668,916.52

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Solution

The fourth proportional to 1,220,201.78, 1,683,875.55 and 668,916.52 is: 923,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,201.78 : 1,683,875.55 = 668,916.52 : x
  2. Step 2: Convert to fraction form
    1,220,201.78/1,683,875.55 = 668,916.52/x
  3. Step 3: Cross multiply
    1,220,201.78x = 1,683,875.55 × 668,916.52
  4. Step 4: Simplify right side
    1,220,201.78x = 1,126,372,171,317.83
  5. Step 5: Solve for x
    x = 1,126,372,171,317.83/1,220,201.78
  6. Step 6: Final answer
    x = 923,103.20

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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.