Home / 688,942.40-1,033,611.24-289,377.68

Finding the Fourth Proportional to 688,942.40, 1,033,611.24 and 289,377.68

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Solution

The fourth proportional to 688,942.40, 1,033,611.24 and 289,377.68 is: 434,149.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,942.40 : 1,033,611.24 = 289,377.68 : x
  2. Step 2: Convert to fraction form
    688,942.40/1,033,611.24 = 289,377.68/x
  3. Step 3: Cross multiply
    688,942.40x = 1,033,611.24 × 289,377.68
  4. Step 4: Simplify right side
    688,942.40x = 299,104,022,653.12
  5. Step 5: Solve for x
    x = 299,104,022,653.12/688,942.40
  6. Step 6: Final answer
    x = 434,149.54

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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.