Home / 738,641.72-1,107,194.37-311,821.33

Finding the Fourth Proportional to 738,641.72, 1,107,194.37 and 311,821.33

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Solution

The fourth proportional to 738,641.72, 1,107,194.37 and 311,821.33 is: 467,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,641.72 : 1,107,194.37 = 311,821.33 : x
  2. Step 2: Convert to fraction form
    738,641.72/1,107,194.37 = 311,821.33/x
  3. Step 3: Cross multiply
    738,641.72x = 1,107,194.37 × 311,821.33
  4. Step 4: Simplify right side
    738,641.72x = 345,246,819,160.59
  5. Step 5: Solve for x
    x = 345,246,819,160.59/738,641.72
  6. Step 6: Final answer
    x = 467,407.69

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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.