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Finding the Fourth Proportional to 608,646, 839,934.36 and 340,374

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Solution

The fourth proportional to 608,646, 839,934.36 and 340,374 is: 469,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,646 : 839,934.36 = 340,374 : x
  2. Step 2: Convert to fraction form
    608,646/839,934.36 = 340,374/x
  3. Step 3: Cross multiply
    608,646x = 839,934.36 × 340,374
  4. Step 4: Simplify right side
    608,646x = 285,891,817,850.64
  5. Step 5: Solve for x
    x = 285,891,817,850.64/608,646
  6. Step 6: Final answer
    x = 469,717.73

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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.