Home / 689,739.67-1,034,653.24-216,443.71

Finding the Fourth Proportional to 689,739.67, 1,034,653.24 and 216,443.71

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Solution

The fourth proportional to 689,739.67, 1,034,653.24 and 216,443.71 is: 324,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,739.67 : 1,034,653.24 = 216,443.71 : x
  2. Step 2: Convert to fraction form
    689,739.67/1,034,653.24 = 216,443.71/x
  3. Step 3: Cross multiply
    689,739.67x = 1,034,653.24 × 216,443.71
  4. Step 4: Simplify right side
    689,739.67x = 223,944,185,829.12
  5. Step 5: Solve for x
    x = 223,944,185,829.12/689,739.67
  6. Step 6: Final answer
    x = 324,679.29

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1.5x scale

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.