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Finding the Fourth Proportional to 666,101.80, 919,164.92 and 375,697.36

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Solution

The fourth proportional to 666,101.80, 919,164.92 and 375,697.36 is: 518,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,101.80 : 919,164.92 = 375,697.36 : x
  2. Step 2: Convert to fraction form
    666,101.80/919,164.92 = 375,697.36/x
  3. Step 3: Cross multiply
    666,101.80x = 919,164.92 × 375,697.36
  4. Step 4: Simplify right side
    666,101.80x = 345,327,831,970.12
  5. Step 5: Solve for x
    x = 345,327,831,970.12/666,101.80
  6. Step 6: Final answer
    x = 518,431.01

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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.