Finding the Fourth Proportional to 1,939,039,775.99, 2,908,968,209.62 and 628,839,666.53
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Solution
The fourth proportional to 1,939,039,775.99, 2,908,968,209.62 and 628,839,666.53 is: 943,391,993.05
Step by Step Solution
- Step 1: Write the proportion equation
1,939,039,775.99 : 2,908,968,209.62 = 628,839,666.53 : x - Step 2: Convert to fraction form
1,939,039,775.99/2,908,968,209.62 = 628,839,666.53/x - Step 3: Cross multiply
1,939,039,775.99x = 2,908,968,209.62 × 628,839,666.53 - Step 4: Simplify right side
1,939,039,775.99x = 1,829,274,598,867,694,848 - Step 5: Solve for x
x = 1,829,274,598,867,694,848/1,939,039,775.99 - Step 6: Final answer
x = 943,391,993.05
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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.