Home / 666,743.40-1,000,433.43-311,705.82

Finding the Fourth Proportional to 666,743.40, 1,000,433.43 and 311,705.82

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Solution

The fourth proportional to 666,743.40, 1,000,433.43 and 311,705.82 is: 467,707.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,743.40 : 1,000,433.43 = 311,705.82 : x
  2. Step 2: Convert to fraction form
    666,743.40/1,000,433.43 = 311,705.82/x
  3. Step 3: Cross multiply
    666,743.40x = 1,000,433.43 × 311,705.82
  4. Step 4: Simplify right side
    666,743.40x = 311,840,922,653.56
  5. Step 5: Solve for x
    x = 311,840,922,653.56/666,743.40
  6. Step 6: Final answer
    x = 467,707.55

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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.