Home / 1,259,712,081.20-1,889,568,121.80-647,492,049.20

Finding the Fourth Proportional to 1,259,712,081.20, 1,889,568,121.80 and 647,492,049.20

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Solution

The fourth proportional to 1,259,712,081.20, 1,889,568,121.80 and 647,492,049.20 is: 971,238,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,712,081.20 : 1,889,568,121.80 = 647,492,049.20 : x
  2. Step 2: Convert to fraction form
    1,259,712,081.20/1,889,568,121.80 = 647,492,049.20/x
  3. Step 3: Cross multiply
    1,259,712,081.20x = 1,889,568,121.80 × 647,492,049.20
  4. Step 4: Simplify right side
    1,259,712,081.20x = 1,223,480,335,287,277,312
  5. Step 5: Solve for x
    x = 1,223,480,335,287,277,312/1,259,712,081.20
  6. Step 6: Final answer
    x = 971,238,073.80

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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.