Home / 666,290.90-919,481.59-375,964.09

Finding the Fourth Proportional to 666,290.90, 919,481.59 and 375,964.09

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Solution

The fourth proportional to 666,290.90, 919,481.59 and 375,964.09 is: 518,830.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,290.90 : 919,481.59 = 375,964.09 : x
  2. Step 2: Convert to fraction form
    666,290.90/919,481.59 = 375,964.09/x
  3. Step 3: Cross multiply
    666,290.90x = 919,481.59 × 375,964.09
  4. Step 4: Simplify right side
    666,290.90x = 345,692,059,256.10
  5. Step 5: Solve for x
    x = 345,692,059,256.10/666,290.90
  6. Step 6: Final answer
    x = 518,830.53

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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.