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Finding the Fourth Proportional to 993,704.64, 1,372,915.68 and 693,240

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Solution

The fourth proportional to 993,704.64, 1,372,915.68 and 693,240 is: 957,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,704.64 : 1,372,915.68 = 693,240 : x
  2. Step 2: Convert to fraction form
    993,704.64/1,372,915.68 = 693,240/x
  3. Step 3: Cross multiply
    993,704.64x = 1,372,915.68 × 693,240
  4. Step 4: Simplify right side
    993,704.64x = 951,760,066,003.20
  5. Step 5: Solve for x
    x = 951,760,066,003.20/993,704.64
  6. Step 6: Final answer
    x = 957,789.70

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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.