Home / 1,991,735,793.78-2,987,398,956.12-663,620,386.52

Finding the Fourth Proportional to 1,991,735,793.78, 2,987,398,956.12 and 663,620,386.52

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Solution

The fourth proportional to 1,991,735,793.78, 2,987,398,956.12 and 663,620,386.52 is: 995,362,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,735,793.78 : 2,987,398,956.12 = 663,620,386.52 : x
  2. Step 2: Convert to fraction form
    1,991,735,793.78/2,987,398,956.12 = 663,620,386.52/x
  3. Step 3: Cross multiply
    1,991,735,793.78x = 2,987,398,956.12 × 663,620,386.52
  4. Step 4: Simplify right side
    1,991,735,793.78x = 1,982,498,849,934,861,824
  5. Step 5: Solve for x
    x = 1,982,498,849,934,861,824/1,991,735,793.78
  6. Step 6: Final answer
    x = 995,362,364.89

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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.