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Finding the Fourth Proportional to 608,662.35, 839,992.92 and 340,390.35

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Solution

The fourth proportional to 608,662.35, 839,992.92 and 340,390.35 is: 469,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,662.35 : 839,992.92 = 340,390.35 : x
  2. Step 2: Convert to fraction form
    608,662.35/839,992.92 = 340,390.35/x
  3. Step 3: Cross multiply
    608,662.35x = 839,992.92 × 340,390.35
  4. Step 4: Simplify right side
    608,662.35x = 285,925,478,134.41
  5. Step 5: Solve for x
    x = 285,925,478,134.41/608,662.35
  6. Step 6: Final answer
    x = 469,760.42

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1.5x scale

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.