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Finding the Fourth Proportional to 800,759.21, 1,103,700.95 and 607,102.79

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Solution

The fourth proportional to 800,759.21, 1,103,700.95 and 607,102.79 is: 836,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,759.21 : 1,103,700.95 = 607,102.79 : x
  2. Step 2: Convert to fraction form
    800,759.21/1,103,700.95 = 607,102.79/x
  3. Step 3: Cross multiply
    800,759.21x = 1,103,700.95 × 607,102.79
  4. Step 4: Simplify right side
    800,759.21x = 670,059,917,516.63
  5. Step 5: Solve for x
    x = 670,059,917,516.63/800,759.21
  6. Step 6: Final answer
    x = 836,780.79

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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.