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Finding the Fourth Proportional to 889,170, 1,227,054.60 and 486,762

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Solution

The fourth proportional to 889,170, 1,227,054.60 and 486,762 is: 671,731.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,170 : 1,227,054.60 = 486,762 : x
  2. Step 2: Convert to fraction form
    889,170/1,227,054.60 = 486,762/x
  3. Step 3: Cross multiply
    889,170x = 1,227,054.60 × 486,762
  4. Step 4: Simplify right side
    889,170x = 597,283,551,205.20
  5. Step 5: Solve for x
    x = 597,283,551,205.20/889,170
  6. Step 6: Final answer
    x = 671,731.56

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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.