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Finding the Fourth Proportional to 510,785.43, 704,915.73 and 281,342.67

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Solution

The fourth proportional to 510,785.43, 704,915.73 and 281,342.67 is: 388,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,785.43 : 704,915.73 = 281,342.67 : x
  2. Step 2: Convert to fraction form
    510,785.43/704,915.73 = 281,342.67/x
  3. Step 3: Cross multiply
    510,785.43x = 704,915.73 × 281,342.67
  4. Step 4: Simplify right side
    510,785.43x = 198,322,873,603.20
  5. Step 5: Solve for x
    x = 198,322,873,603.20/510,785.43
  6. Step 6: Final answer
    x = 388,270.42

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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.