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Finding the Fourth Proportional to 978,590.37, 1,467,533.43 and 338,720.34

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Solution

The fourth proportional to 978,590.37, 1,467,533.43 and 338,720.34 is: 507,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,590.37 : 1,467,533.43 = 338,720.34 : x
  2. Step 2: Convert to fraction form
    978,590.37/1,467,533.43 = 338,720.34/x
  3. Step 3: Cross multiply
    978,590.37x = 1,467,533.43 × 338,720.34
  4. Step 4: Simplify right side
    978,590.37x = 497,083,422,370.97
  5. Step 5: Solve for x
    x = 497,083,422,370.97/978,590.37
  6. Step 6: Final answer
    x = 507,958.63

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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.