Home / 1,082,415.76-1,616,986.40-780,318.16

Finding the Fourth Proportional to 1,082,415.76, 1,616,986.40 and 780,318.16

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Solution

The fourth proportional to 1,082,415.76, 1,616,986.40 and 780,318.16 is: 1,165,692.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082,415.76 : 1,616,986.40 = 780,318.16 : x
  2. Step 2: Convert to fraction form
    1,082,415.76/1,616,986.40 = 780,318.16/x
  3. Step 3: Cross multiply
    1,082,415.76x = 1,616,986.40 × 780,318.16
  4. Step 4: Simplify right side
    1,082,415.76x = 1,261,763,852,393.02
  5. Step 5: Solve for x
    x = 1,261,763,852,393.02/1,082,415.76
  6. Step 6: Final answer
    x = 1,165,692.43

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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.