Finding the Fourth Proportional to 1,679,629,848.40, 2,519,444,772.60 and 989,181,701.20
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Solution
The fourth proportional to 1,679,629,848.40, 2,519,444,772.60 and 989,181,701.20 is: 1,483,772,551.80
Step by Step Solution
- Step 1: Write the proportion equation
1,679,629,848.40 : 2,519,444,772.60 = 989,181,701.20 : x - Step 2: Convert to fraction form
1,679,629,848.40/2,519,444,772.60 = 989,181,701.20/x - Step 3: Cross multiply
1,679,629,848.40x = 2,519,444,772.60 × 989,181,701.20 - Step 4: Simplify right side
1,679,629,848.40x = 2,492,188,666,239,915,008 - Step 5: Solve for x
x = 2,492,188,666,239,915,008/1,679,629,848.40 - Step 6: Final answer
x = 1,483,772,551.80
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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.