Home / 1,328,539.80-1,992,809.70-766,918.20

Finding the Fourth Proportional to 1,328,539.80, 1,992,809.70 and 766,918.20

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Solution

The fourth proportional to 1,328,539.80, 1,992,809.70 and 766,918.20 is: 1,150,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,539.80 : 1,992,809.70 = 766,918.20 : x
  2. Step 2: Convert to fraction form
    1,328,539.80/1,992,809.70 = 766,918.20/x
  3. Step 3: Cross multiply
    1,328,539.80x = 1,992,809.70 × 766,918.20
  4. Step 4: Simplify right side
    1,328,539.80x = 1,528,322,028,066.54
  5. Step 5: Solve for x
    x = 1,528,322,028,066.54/1,328,539.80
  6. Step 6: Final answer
    x = 1,150,377.30

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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.