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Finding the Fourth Proportional to 889,151, 1,227,028.38 and 486,743

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Solution

The fourth proportional to 889,151, 1,227,028.38 and 486,743 is: 671,705.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,151 : 1,227,028.38 = 486,743 : x
  2. Step 2: Convert to fraction form
    889,151/1,227,028.38 = 486,743/x
  3. Step 3: Cross multiply
    889,151x = 1,227,028.38 × 486,743
  4. Step 4: Simplify right side
    889,151x = 597,247,474,766.34
  5. Step 5: Solve for x
    x = 597,247,474,766.34/889,151
  6. Step 6: Final answer
    x = 671,705.34

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1.5x scale

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.