Home / 1,240,690.70-1,861,036.05-1,188,202.70

Finding the Fourth Proportional to 1,240,690.70, 1,861,036.05 and 1,188,202.70

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Solution

The fourth proportional to 1,240,690.70, 1,861,036.05 and 1,188,202.70 is: 1,782,304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,690.70 : 1,861,036.05 = 1,188,202.70 : x
  2. Step 2: Convert to fraction form
    1,240,690.70/1,861,036.05 = 1,188,202.70/x
  3. Step 3: Cross multiply
    1,240,690.70x = 1,861,036.05 × 1,188,202.70
  4. Step 4: Simplify right side
    1,240,690.70x = 2,211,288,059,407.34
  5. Step 5: Solve for x
    x = 2,211,288,059,407.34/1,240,690.70
  6. Step 6: Final answer
    x = 1,782,304.05

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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.