Home / 660,519,072.90-990,778,609.35-200,456,504.10

Finding the Fourth Proportional to 660,519,072.90, 990,778,609.35 and 200,456,504.10

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Solution

The fourth proportional to 660,519,072.90, 990,778,609.35 and 200,456,504.10 is: 300,684,756.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,519,072.90 : 990,778,609.35 = 200,456,504.10 : x
  2. Step 2: Convert to fraction form
    660,519,072.90/990,778,609.35 = 200,456,504.10/x
  3. Step 3: Cross multiply
    660,519,072.90x = 990,778,609.35 × 200,456,504.10
  4. Step 4: Simplify right side
    660,519,072.90x = 198,608,016,367,360,576
  5. Step 5: Solve for x
    x = 198,608,016,367,360,576/660,519,072.90
  6. Step 6: Final answer
    x = 300,684,756.15

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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.