Home / 1,328,537.80-1,992,806.70-766,916.20

Finding the Fourth Proportional to 1,328,537.80, 1,992,806.70 and 766,916.20

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Solution

The fourth proportional to 1,328,537.80, 1,992,806.70 and 766,916.20 is: 1,150,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,537.80 : 1,992,806.70 = 766,916.20 : x
  2. Step 2: Convert to fraction form
    1,328,537.80/1,992,806.70 = 766,916.20/x
  3. Step 3: Cross multiply
    1,328,537.80x = 1,992,806.70 × 766,916.20
  4. Step 4: Simplify right side
    1,328,537.80x = 1,528,315,741,698.54
  5. Step 5: Solve for x
    x = 1,528,315,741,698.54/1,328,537.80
  6. Step 6: Final answer
    x = 1,150,374.30

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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.