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Finding the Fourth Proportional to 608,670.72, 839,964.96 and 340,398.72

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Solution

The fourth proportional to 608,670.72, 839,964.96 and 340,398.72 is: 469,749.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,670.72 : 839,964.96 = 340,398.72 : x
  2. Step 2: Convert to fraction form
    608,670.72/839,964.96 = 340,398.72/x
  3. Step 3: Cross multiply
    608,670.72x = 839,964.96 × 340,398.72
  4. Step 4: Simplify right side
    608,670.72x = 285,922,997,228.85
  5. Step 5: Solve for x
    x = 285,922,997,228.85/608,670.72
  6. Step 6: Final answer
    x = 469,749.88

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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.