Home / 740,668.56-1,022,205.78-418,399.44

Finding the Fourth Proportional to 740,668.56, 1,022,205.78 and 418,399.44

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Solution

The fourth proportional to 740,668.56, 1,022,205.78 and 418,399.44 is: 577,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,668.56 : 1,022,205.78 = 418,399.44 : x
  2. Step 2: Convert to fraction form
    740,668.56/1,022,205.78 = 418,399.44/x
  3. Step 3: Cross multiply
    740,668.56x = 1,022,205.78 × 418,399.44
  4. Step 4: Simplify right side
    740,668.56x = 427,690,325,916.76
  5. Step 5: Solve for x
    x = 427,690,325,916.76/740,668.56
  6. Step 6: Final answer
    x = 577,438.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.