Finding the Fourth Proportional to 1,274,124,379.14, 1,909,239,656.31 and 858,062,763.18
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Solution
The fourth proportional to 1,274,124,379.14, 1,909,239,656.31 and 858,062,763.18 is: 1,285,782,990.96
Step by Step Solution
- Step 1: Write the proportion equation
1,274,124,379.14 : 1,909,239,656.31 = 858,062,763.18 : x - Step 2: Convert to fraction form
1,274,124,379.14/1,909,239,656.31 = 858,062,763.18/x - Step 3: Cross multiply
1,274,124,379.14x = 1,909,239,656.31 × 858,062,763.18 - Step 4: Simplify right side
1,274,124,379.14x = 1,638,247,455,066,191,872 - Step 5: Solve for x
x = 1,638,247,455,066,191,872/1,274,124,379.14 - Step 6: Final answer
x = 1,285,782,990.96
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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.