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Finding the Fourth Proportional to 1,987,488,003.28, 2,981,232,004.92 and 1,987,488,003.28

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Solution

The fourth proportional to 1,987,488,003.28, 2,981,232,004.92 and 1,987,488,003.28 is: 2,981,232,004.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,488,003.28 : 2,981,232,004.92 = 1,987,488,003.28 : x
  2. Step 2: Convert to fraction form
    1,987,488,003.28/2,981,232,004.92 = 1,987,488,003.28/x
  3. Step 3: Cross multiply
    1,987,488,003.28x = 2,981,232,004.92 × 1,987,488,003.28
  4. Step 4: Simplify right side
    1,987,488,003.28x = 5,925,162,844,748,038,144
  5. Step 5: Solve for x
    x = 5,925,162,844,748,038,144/1,987,488,003.28
  6. Step 6: Final answer
    x = 2,981,232,004.92

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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.