Finding the Fourth Proportional to 1,029,891,378.80, 1,544,837,068.20 and 917,021,183.60
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Solution
The fourth proportional to 1,029,891,378.80, 1,544,837,068.20 and 917,021,183.60 is: 1,375,531,775.40
Step by Step Solution
- Step 1: Write the proportion equation
1,029,891,378.80 : 1,544,837,068.20 = 917,021,183.60 : x - Step 2: Convert to fraction form
1,029,891,378.80/1,544,837,068.20 = 917,021,183.60/x - Step 3: Cross multiply
1,029,891,378.80x = 1,544,837,068.20 × 917,021,183.60 - Step 4: Simplify right side
1,029,891,378.80x = 1,416,648,316,749,917,952 - Step 5: Solve for x
x = 1,416,648,316,749,917,952/1,029,891,378.80 - Step 6: Final answer
x = 1,375,531,775.40
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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.