Home / 693,149.57-1,039,842.58-309,037.80

Finding the Fourth Proportional to 693,149.57, 1,039,842.58 and 309,037.80

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Solution

The fourth proportional to 693,149.57, 1,039,842.58 and 309,037.80 is: 463,609.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,149.57 : 1,039,842.58 = 309,037.80 : x
  2. Step 2: Convert to fraction form
    693,149.57/1,039,842.58 = 309,037.80/x
  3. Step 3: Cross multiply
    693,149.57x = 1,039,842.58 × 309,037.80
  4. Step 4: Simplify right side
    693,149.57x = 321,350,663,269.52
  5. Step 5: Solve for x
    x = 321,350,663,269.52/693,149.57
  6. Step 6: Final answer
    x = 463,609.41

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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.