Home / 689,739.68-1,034,653.25-216,443.72

Finding the Fourth Proportional to 689,739.68, 1,034,653.25 and 216,443.72

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Solution

The fourth proportional to 689,739.68, 1,034,653.25 and 216,443.72 is: 324,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,739.68 : 1,034,653.25 = 216,443.72 : x
  2. Step 2: Convert to fraction form
    689,739.68/1,034,653.25 = 216,443.72/x
  3. Step 3: Cross multiply
    689,739.68x = 1,034,653.25 × 216,443.72
  4. Step 4: Simplify right side
    689,739.68x = 223,944,192,084.61
  5. Step 5: Solve for x
    x = 223,944,192,084.61/689,739.68
  6. Step 6: Final answer
    x = 324,679.30

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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.