Home / 1,990,656,004.40-2,985,984,006.60-900,174,647.60

Finding the Fourth Proportional to 1,990,656,004.40, 2,985,984,006.60 and 900,174,647.60

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Solution

The fourth proportional to 1,990,656,004.40, 2,985,984,006.60 and 900,174,647.60 is: 1,350,261,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,656,004.40 : 2,985,984,006.60 = 900,174,647.60 : x
  2. Step 2: Convert to fraction form
    1,990,656,004.40/2,985,984,006.60 = 900,174,647.60/x
  3. Step 3: Cross multiply
    1,990,656,004.40x = 2,985,984,006.60 × 900,174,647.60
  4. Step 4: Simplify right side
    1,990,656,004.40x = 2,687,907,100,880,391,168
  5. Step 5: Solve for x
    x = 2,687,907,100,880,391,168/1,990,656,004.40
  6. Step 6: Final answer
    x = 1,350,261,971.40

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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.