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Finding the Fourth Proportional to 703,618, 1,055,427 and 309,634

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Solution

The fourth proportional to 703,618, 1,055,427 and 309,634 is: 464,451

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,618 : 1,055,427 = 309,634 : x
  2. Step 2: Convert to fraction form
    703,618/1,055,427 = 309,634/x
  3. Step 3: Cross multiply
    703,618x = 1,055,427 × 309,634
  4. Step 4: Simplify right side
    703,618x = 326,796,083,718
  5. Step 5: Solve for x
    x = 326,796,083,718/703,618
  6. Step 6: Final answer
    x = 464,451

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.