Home / 1,409,687.12-1,942,686.60-1,383,778.64

Finding the Fourth Proportional to 1,409,687.12, 1,942,686.60 and 1,383,778.64

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Solution

The fourth proportional to 1,409,687.12, 1,942,686.60 and 1,383,778.64 is: 1,906,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,687.12 : 1,942,686.60 = 1,383,778.64 : x
  2. Step 2: Convert to fraction form
    1,409,687.12/1,942,686.60 = 1,383,778.64/x
  3. Step 3: Cross multiply
    1,409,687.12x = 1,942,686.60 × 1,383,778.64
  4. Step 4: Simplify right side
    1,409,687.12x = 2,688,248,221,294.22
  5. Step 5: Solve for x
    x = 2,688,248,221,294.22/1,409,687.12
  6. Step 6: Final answer
    x = 1,906,982.18

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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.