Finding the Fourth Proportional to 1,291,967,450.19, 1,782,679,900.86 and 727,364,531.79
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Solution
The fourth proportional to 1,291,967,450.19, 1,782,679,900.86 and 727,364,531.79 is: 1,003,630,649.70
Step by Step Solution
- Step 1: Write the proportion equation
1,291,967,450.19 : 1,782,679,900.86 = 727,364,531.79 : x - Step 2: Convert to fraction form
1,291,967,450.19/1,782,679,900.86 = 727,364,531.79/x - Step 3: Cross multiply
1,291,967,450.19x = 1,782,679,900.86 × 727,364,531.79 - Step 4: Simplify right side
1,291,967,450.19x = 1,296,658,131,420,477,440 - Step 5: Solve for x
x = 1,296,658,131,420,477,440/1,291,967,450.19 - Step 6: Final answer
x = 1,003,630,649.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.