Home / 1,391,727.77-1,920,551.73-818,804.78

Finding the Fourth Proportional to 1,391,727.77, 1,920,551.73 and 818,804.78

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Solution

The fourth proportional to 1,391,727.77, 1,920,551.73 and 818,804.78 is: 1,129,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,727.77 : 1,920,551.73 = 818,804.78 : x
  2. Step 2: Convert to fraction form
    1,391,727.77/1,920,551.73 = 818,804.78/x
  3. Step 3: Cross multiply
    1,391,727.77x = 1,920,551.73 × 818,804.78
  4. Step 4: Simplify right side
    1,391,727.77x = 1,572,556,936,761.27
  5. Step 5: Solve for x
    x = 1,572,556,936,761.27/1,391,727.77
  6. Step 6: Final answer
    x = 1,129,931.42

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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.