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Finding the Fourth Proportional to 666,466.01, 919,700.21 and 380,078.27

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Solution

The fourth proportional to 666,466.01, 919,700.21 and 380,078.27 is: 524,494.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,466.01 : 919,700.21 = 380,078.27 : x
  2. Step 2: Convert to fraction form
    666,466.01/919,700.21 = 380,078.27/x
  3. Step 3: Cross multiply
    666,466.01x = 919,700.21 × 380,078.27
  4. Step 4: Simplify right side
    666,466.01x = 349,558,058,236.54
  5. Step 5: Solve for x
    x = 349,558,058,236.54/666,466.01
  6. Step 6: Final answer
    x = 524,494.96

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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.