Finding the Fourth Proportional to 2,665,602,181.20, 3,998,403,271.80 and 1,288,107,109.20
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Solution
The fourth proportional to 2,665,602,181.20, 3,998,403,271.80 and 1,288,107,109.20 is: 1,932,160,663.80
Step by Step Solution
- Step 1: Write the proportion equation
2,665,602,181.20 : 3,998,403,271.80 = 1,288,107,109.20 : x - Step 2: Convert to fraction form
2,665,602,181.20/3,998,403,271.80 = 1,288,107,109.20/x - Step 3: Cross multiply
2,665,602,181.20x = 3,998,403,271.80 × 1,288,107,109.20 - Step 4: Simplify right side
2,665,602,181.20x = 5,150,371,679,854,119,936 - Step 5: Solve for x
x = 5,150,371,679,854,119,936/2,665,602,181.20 - Step 6: Final answer
x = 1,932,160,663.80
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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.