Home / 1,105,311.40-1,657,967.10-769,388.20

Finding the Fourth Proportional to 1,105,311.40, 1,657,967.10 and 769,388.20

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Solution

The fourth proportional to 1,105,311.40, 1,657,967.10 and 769,388.20 is: 1,154,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,311.40 : 1,657,967.10 = 769,388.20 : x
  2. Step 2: Convert to fraction form
    1,105,311.40/1,657,967.10 = 769,388.20/x
  3. Step 3: Cross multiply
    1,105,311.40x = 1,657,967.10 × 769,388.20
  4. Step 4: Simplify right side
    1,105,311.40x = 1,275,620,322,728.22
  5. Step 5: Solve for x
    x = 1,275,620,322,728.22/1,105,311.40
  6. Step 6: Final answer
    x = 1,154,082.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.