Home / 1,000,659.87-1,381,119.12-919,959.57

Finding the Fourth Proportional to 1,000,659.87, 1,381,119.12 and 919,959.57

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Solution

The fourth proportional to 1,000,659.87, 1,381,119.12 and 919,959.57 is: 1,269,735.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000,659.87 : 1,381,119.12 = 919,959.57 : x
  2. Step 2: Convert to fraction form
    1,000,659.87/1,381,119.12 = 919,959.57/x
  3. Step 3: Cross multiply
    1,000,659.87x = 1,381,119.12 × 919,959.57
  4. Step 4: Simplify right side
    1,000,659.87x = 1,270,573,751,753.98
  5. Step 5: Solve for x
    x = 1,270,573,751,753.98/1,000,659.87
  6. Step 6: Final answer
    x = 1,269,735.89

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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.