Home / 693,419.60-1,040,129.40-378,491.60

Finding the Fourth Proportional to 693,419.60, 1,040,129.40 and 378,491.60

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Solution

The fourth proportional to 693,419.60, 1,040,129.40 and 378,491.60 is: 567,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,419.60 : 1,040,129.40 = 378,491.60 : x
  2. Step 2: Convert to fraction form
    693,419.60/1,040,129.40 = 378,491.60/x
  3. Step 3: Cross multiply
    693,419.60x = 1,040,129.40 × 378,491.60
  4. Step 4: Simplify right side
    693,419.60x = 393,680,240,813.04
  5. Step 5: Solve for x
    x = 393,680,240,813.04/693,419.60
  6. Step 6: Final answer
    x = 567,737.40

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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.