Home / 3,981,639,920.80-5,971,663,618.80-1,911,357,680.80

Finding the Fourth Proportional to 3,981,639,920.80, 5,971,663,618.80 and 1,911,357,680.80

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Solution

The fourth proportional to 3,981,639,920.80, 5,971,663,618.80 and 1,911,357,680.80 is: 2,866,654,281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,639,920.80 : 5,971,663,618.80 = 1,911,357,680.80 : x
  2. Step 2: Convert to fraction form
    3,981,639,920.80/5,971,663,618.80 = 1,911,357,680.80/x
  3. Step 3: Cross multiply
    3,981,639,920.80x = 5,971,663,618.80 × 1,911,357,680.80
  4. Step 4: Simplify right side
    3,981,639,920.80x = 11,413,985,124,947,302,400
  5. Step 5: Solve for x
    x = 11,413,985,124,947,302,400/3,981,639,920.80
  6. Step 6: Final answer
    x = 2,866,654,281.15

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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.