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Finding the Fourth Proportional to 858,762,004.45, 1,288,143,006.68 and 858,762,004.45

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Solution

The fourth proportional to 858,762,004.45, 1,288,143,006.68 and 858,762,004.45 is: 1,288,143,006.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,762,004.45 : 1,288,143,006.68 = 858,762,004.45 : x
  2. Step 2: Convert to fraction form
    858,762,004.45/1,288,143,006.68 = 858,762,004.45/x
  3. Step 3: Cross multiply
    858,762,004.45x = 1,288,143,006.68 × 858,762,004.45
  4. Step 4: Simplify right side
    858,762,004.45x = 1,106,208,270,434,766,720
  5. Step 5: Solve for x
    x = 1,106,208,270,434,766,720/858,762,004.45
  6. Step 6: Final answer
    x = 1,288,143,006.68

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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.