Home / 991,118.43-1,486,733.94-281,090.25

Finding the Fourth Proportional to 991,118.43, 1,486,733.94 and 281,090.25

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Solution

The fourth proportional to 991,118.43, 1,486,733.94 and 281,090.25 is: 421,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,118.43 : 1,486,733.94 = 281,090.25 : x
  2. Step 2: Convert to fraction form
    991,118.43/1,486,733.94 = 281,090.25/x
  3. Step 3: Cross multiply
    991,118.43x = 1,486,733.94 × 281,090.25
  4. Step 4: Simplify right side
    991,118.43x = 417,906,414,878.09
  5. Step 5: Solve for x
    x = 417,906,414,878.09/991,118.43
  6. Step 6: Final answer
    x = 421,651.34

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Double scale
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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.