Finding the Fourth Proportional to 1,259,715,175.20, 1,889,572,762.80 and 441,532,231.20
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Solution
The fourth proportional to 1,259,715,175.20, 1,889,572,762.80 and 441,532,231.20 is: 662,298,346.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,715,175.20 : 1,889,572,762.80 = 441,532,231.20 : x - Step 2: Convert to fraction form
1,259,715,175.20/1,889,572,762.80 = 441,532,231.20/x - Step 3: Cross multiply
1,259,715,175.20x = 1,889,572,762.80 × 441,532,231.20 - Step 4: Simplify right side
1,259,715,175.20x = 834,307,277,973,832,320 - Step 5: Solve for x
x = 834,307,277,973,832,320/1,259,715,175.20 - Step 6: Final answer
x = 662,298,346.80
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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.