Finding the Fourth Proportional to 1,120,160,435.36, 1,545,780,879.24 and 618,358,441.28
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Solution
The fourth proportional to 1,120,160,435.36, 1,545,780,879.24 and 618,358,441.28 is: 853,312,279.99
Step by Step Solution
- Step 1: Write the proportion equation
1,120,160,435.36 : 1,545,780,879.24 = 618,358,441.28 : x - Step 2: Convert to fraction form
1,120,160,435.36/1,545,780,879.24 = 618,358,441.28/x - Step 3: Cross multiply
1,120,160,435.36x = 1,545,780,879.24 × 618,358,441.28 - Step 4: Simplify right side
1,120,160,435.36x = 955,846,655,047,274,240 - Step 5: Solve for x
x = 955,846,655,047,274,240/1,120,160,435.36 - Step 6: Final answer
x = 853,312,279.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.