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Finding the Fourth Proportional to 666,622.91, 920,059.37 and 376,322.96

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Solution

The fourth proportional to 666,622.91, 920,059.37 and 376,322.96 is: 519,393.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,622.91 : 920,059.37 = 376,322.96 : x
  2. Step 2: Convert to fraction form
    666,622.91/920,059.37 = 376,322.96/x
  3. Step 3: Cross multiply
    666,622.91x = 920,059.37 × 376,322.96
  4. Step 4: Simplify right side
    666,622.91x = 346,239,467,794.28
  5. Step 5: Solve for x
    x = 346,239,467,794.28/666,622.91
  6. Step 6: Final answer
    x = 519,393.29

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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.