Home / 689,428.32-1,034,142.78-216,150.59

Finding the Fourth Proportional to 689,428.32, 1,034,142.78 and 216,150.59

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Solution

The fourth proportional to 689,428.32, 1,034,142.78 and 216,150.59 is: 324,225.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,428.32 : 1,034,142.78 = 216,150.59 : x
  2. Step 2: Convert to fraction form
    689,428.32/1,034,142.78 = 216,150.59/x
  3. Step 3: Cross multiply
    689,428.32x = 1,034,142.78 × 216,150.59
  4. Step 4: Simplify right side
    689,428.32x = 223,530,566,870.53
  5. Step 5: Solve for x
    x = 223,530,566,870.53/689,428.32
  6. Step 6: Final answer
    x = 324,225.97

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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.