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Finding the Fourth Proportional to 666,100.08, 919,162.54 and 375,695.64

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Solution

The fourth proportional to 666,100.08, 919,162.54 and 375,695.64 is: 518,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,100.08 : 919,162.54 = 375,695.64 : x
  2. Step 2: Convert to fraction form
    666,100.08/919,162.54 = 375,695.64/x
  3. Step 3: Cross multiply
    666,100.08x = 919,162.54 × 375,695.64
  4. Step 4: Simplify right side
    666,100.08x = 345,325,355,752.09
  5. Step 5: Solve for x
    x = 345,325,355,752.09/666,100.08
  6. Step 6: Final answer
    x = 518,428.64

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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.