Home / 1,082,416.76-1,616,987.89-780,319.16

Finding the Fourth Proportional to 1,082,416.76, 1,616,987.89 and 780,319.16

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Solution

The fourth proportional to 1,082,416.76, 1,616,987.89 and 780,319.16 is: 1,165,693.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082,416.76 : 1,616,987.89 = 780,319.16 : x
  2. Step 2: Convert to fraction form
    1,082,416.76/1,616,987.89 = 780,319.16/x
  3. Step 3: Cross multiply
    1,082,416.76x = 1,616,987.89 × 780,319.16
  4. Step 4: Simplify right side
    1,082,416.76x = 1,261,766,632,054.97
  5. Step 5: Solve for x
    x = 1,261,766,632,054.97/1,082,416.76
  6. Step 6: Final answer
    x = 1,165,693.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.