Home / 1,990,658,001.90-2,985,987,002.85-1,978,564,766.70

Finding the Fourth Proportional to 1,990,658,001.90, 2,985,987,002.85 and 1,978,564,766.70

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Solution

The fourth proportional to 1,990,658,001.90, 2,985,987,002.85 and 1,978,564,766.70 is: 2,967,847,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,658,001.90 : 2,985,987,002.85 = 1,978,564,766.70 : x
  2. Step 2: Convert to fraction form
    1,990,658,001.90/2,985,987,002.85 = 1,978,564,766.70/x
  3. Step 3: Cross multiply
    1,990,658,001.90x = 2,985,987,002.85 × 1,978,564,766.70
  4. Step 4: Simplify right side
    1,990,658,001.90x = 5,907,968,677,663,142,912
  5. Step 5: Solve for x
    x = 5,907,968,677,663,142,912/1,990,658,001.90
  6. Step 6: Final answer
    x = 2,967,847,150.05

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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.