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Finding the Fourth Proportional to 662,342, 993,606.44 and 212,912.24

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Solution

The fourth proportional to 662,342, 993,606.44 and 212,912.24 is: 319,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,342 : 993,606.44 = 212,912.24 : x
  2. Step 2: Convert to fraction form
    662,342/993,606.44 = 212,912.24/x
  3. Step 3: Cross multiply
    662,342x = 993,606.44 × 212,912.24
  4. Step 4: Simplify right side
    662,342x = 211,550,972,818.83
  5. Step 5: Solve for x
    x = 211,550,972,818.83/662,342
  6. Step 6: Final answer
    x = 319,398.40

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1.5x scale

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.