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Finding the Fourth Proportional to 889,150, 1,227,027 and 486,742

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Solution

The fourth proportional to 889,150, 1,227,027 and 486,742 is: 671,703.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,150 : 1,227,027 = 486,742 : x
  2. Step 2: Convert to fraction form
    889,150/1,227,027 = 486,742/x
  3. Step 3: Cross multiply
    889,150x = 1,227,027 × 486,742
  4. Step 4: Simplify right side
    889,150x = 597,245,576,034
  5. Step 5: Solve for x
    x = 597,245,576,034/889,150
  6. Step 6: Final answer
    x = 671,703.96

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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.