Home / 738,906.03-1,108,796.78-312,418.55

Finding the Fourth Proportional to 738,906.03, 1,108,796.78 and 312,418.55

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Solution

The fourth proportional to 738,906.03, 1,108,796.78 and 312,418.55 is: 468,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,906.03 : 1,108,796.78 = 312,418.55 : x
  2. Step 2: Convert to fraction form
    738,906.03/1,108,796.78 = 312,418.55/x
  3. Step 3: Cross multiply
    738,906.03x = 1,108,796.78 × 312,418.55
  4. Step 4: Simplify right side
    738,906.03x = 346,408,685,805.31
  5. Step 5: Solve for x
    x = 346,408,685,805.31/738,906.03
  6. Step 6: Final answer
    x = 468,812.91

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Double scale
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Similar ratio
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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.