Home / 1,405,942-1,940,236.02-862,378.12

Finding the Fourth Proportional to 1,405,942, 1,940,236.02 and 862,378.12

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Solution

The fourth proportional to 1,405,942, 1,940,236.02 and 862,378.12 is: 1,190,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,942 : 1,940,236.02 = 862,378.12 : x
  2. Step 2: Convert to fraction form
    1,405,942/1,940,236.02 = 862,378.12/x
  3. Step 3: Cross multiply
    1,405,942x = 1,940,236.02 × 862,378.12
  4. Step 4: Simplify right side
    1,405,942x = 1,673,217,091,283.88
  5. Step 5: Solve for x
    x = 1,673,217,091,283.88/1,405,942
  6. Step 6: Final answer
    x = 1,190,103.92

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1.5x scale

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.