Home / 783,871.71-1,081,938.92-481,890.75

Finding the Fourth Proportional to 783,871.71, 1,081,938.92 and 481,890.75

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Solution

The fourth proportional to 783,871.71, 1,081,938.92 and 481,890.75 is: 665,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,871.71 : 1,081,938.92 = 481,890.75 : x
  2. Step 2: Convert to fraction form
    783,871.71/1,081,938.92 = 481,890.75/x
  3. Step 3: Cross multiply
    783,871.71x = 1,081,938.92 × 481,890.75
  4. Step 4: Simplify right side
    783,871.71x = 521,376,355,203.54
  5. Step 5: Solve for x
    x = 521,376,355,203.54/783,871.71
  6. Step 6: Final answer
    x = 665,129.70

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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.