Home / 1,990,658,002.90-2,985,987,004.35-1,978,564,767.70

Finding the Fourth Proportional to 1,990,658,002.90, 2,985,987,004.35 and 1,978,564,767.70

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Solution

The fourth proportional to 1,990,658,002.90, 2,985,987,004.35 and 1,978,564,767.70 is: 2,967,847,151.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,658,002.90 : 2,985,987,004.35 = 1,978,564,767.70 : x
  2. Step 2: Convert to fraction form
    1,990,658,002.90/2,985,987,004.35 = 1,978,564,767.70/x
  3. Step 3: Cross multiply
    1,990,658,002.90x = 2,985,987,004.35 × 1,978,564,767.70
  4. Step 4: Simplify right side
    1,990,658,002.90x = 5,907,968,683,616,976,896
  5. Step 5: Solve for x
    x = 5,907,968,683,616,976,896/1,990,658,002.90
  6. Step 6: Final answer
    x = 2,967,847,151.55

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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.