Home / 1,101,310.72-1,520,241.04-780,696.64

Finding the Fourth Proportional to 1,101,310.72, 1,520,241.04 and 780,696.64

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Solution

The fourth proportional to 1,101,310.72, 1,520,241.04 and 780,696.64 is: 1,077,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101,310.72 : 1,520,241.04 = 780,696.64 : x
  2. Step 2: Convert to fraction form
    1,101,310.72/1,520,241.04 = 780,696.64/x
  3. Step 3: Cross multiply
    1,101,310.72x = 1,520,241.04 × 780,696.64
  4. Step 4: Simplify right side
    1,101,310.72x = 1,186,847,071,918.11
  5. Step 5: Solve for x
    x = 1,186,847,071,918.11/1,101,310.72
  6. Step 6: Final answer
    x = 1,077,667.77

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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.