Home / 1,286,530.80-1,928,183.40-655,695.60

Finding the Fourth Proportional to 1,286,530.80, 1,928,183.40 and 655,695.60

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Solution

The fourth proportional to 1,286,530.80, 1,928,183.40 and 655,695.60 is: 982,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,530.80 : 1,928,183.40 = 655,695.60 : x
  2. Step 2: Convert to fraction form
    1,286,530.80/1,928,183.40 = 655,695.60/x
  3. Step 3: Cross multiply
    1,286,530.80x = 1,928,183.40 × 655,695.60
  4. Step 4: Simplify right side
    1,286,530.80x = 1,264,301,371,373.04
  5. Step 5: Solve for x
    x = 1,264,301,371,373.04/1,286,530.80
  6. Step 6: Final answer
    x = 982,721.42

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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.