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Finding the Fourth Proportional to 1,121,002,920.45, 1,681,504,380.68 and 1,121,002,920.45

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Solution

The fourth proportional to 1,121,002,920.45, 1,681,504,380.68 and 1,121,002,920.45 is: 1,681,504,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,002,920.45 : 1,681,504,380.68 = 1,121,002,920.45 : x
  2. Step 2: Convert to fraction form
    1,121,002,920.45/1,681,504,380.68 = 1,121,002,920.45/x
  3. Step 3: Cross multiply
    1,121,002,920.45x = 1,681,504,380.68 × 1,121,002,920.45
  4. Step 4: Simplify right side
    1,121,002,920.45x = 1,884,971,321,486,143,488
  5. Step 5: Solve for x
    x = 1,884,971,321,486,143,488/1,121,002,920.45
  6. Step 6: Final answer
    x = 1,681,504,380.68

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Double scale
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1.5x scale

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.