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Finding the Fourth Proportional to 857,883,908.70, 1,286,825,863.05 and 857,883,908.70

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Solution

The fourth proportional to 857,883,908.70, 1,286,825,863.05 and 857,883,908.70 is: 1,286,825,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,883,908.70 : 1,286,825,863.05 = 857,883,908.70 : x
  2. Step 2: Convert to fraction form
    857,883,908.70/1,286,825,863.05 = 857,883,908.70/x
  3. Step 3: Cross multiply
    857,883,908.70x = 1,286,825,863.05 × 857,883,908.70
  4. Step 4: Simplify right side
    857,883,908.70x = 1,103,947,201,209,584,896
  5. Step 5: Solve for x
    x = 1,103,947,201,209,584,896/857,883,908.70
  6. Step 6: Final answer
    x = 1,286,825,863.05

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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.