Home / 689,607.38-1,034,422.14-216,296.84

Finding the Fourth Proportional to 689,607.38, 1,034,422.14 and 216,296.84

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Solution

The fourth proportional to 689,607.38, 1,034,422.14 and 216,296.84 is: 324,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,607.38 : 1,034,422.14 = 216,296.84 : x
  2. Step 2: Convert to fraction form
    689,607.38/1,034,422.14 = 216,296.84/x
  3. Step 3: Cross multiply
    689,607.38x = 1,034,422.14 × 216,296.84
  4. Step 4: Simplify right side
    689,607.38x = 223,742,240,108.04
  5. Step 5: Solve for x
    x = 223,742,240,108.04/689,607.38
  6. Step 6: Final answer
    x = 324,448.73

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Double scale
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Similar ratio
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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.