Home / 1,287,783.40-1,776,780.92-804,839.12

Finding the Fourth Proportional to 1,287,783.40, 1,776,780.92 and 804,839.12

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Solution

The fourth proportional to 1,287,783.40, 1,776,780.92 and 804,839.12 is: 1,110,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,783.40 : 1,776,780.92 = 804,839.12 : x
  2. Step 2: Convert to fraction form
    1,287,783.40/1,776,780.92 = 804,839.12/x
  3. Step 3: Cross multiply
    1,287,783.40x = 1,776,780.92 × 804,839.12
  4. Step 4: Simplify right side
    1,287,783.40x = 1,430,022,792,085.59
  5. Step 5: Solve for x
    x = 1,430,022,792,085.59/1,287,783.40
  6. Step 6: Final answer
    x = 1,110,452.89

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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.