Finding the Fourth Proportional to 1,118,262,117.10, 1,543,206,382.79 and 616,459,876.92
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Solution
The fourth proportional to 1,118,262,117.10, 1,543,206,382.79 and 616,459,876.92 is: 850,717,199.71
Step by Step Solution
- Step 1: Write the proportion equation
1,118,262,117.10 : 1,543,206,382.79 = 616,459,876.92 : x - Step 2: Convert to fraction form
1,118,262,117.10/1,543,206,382.79 = 616,459,876.92/x - Step 3: Cross multiply
1,118,262,117.10x = 1,543,206,382.79 × 616,459,876.92 - Step 4: Simplify right side
1,118,262,117.10x = 951,324,816,796,881,664 - Step 5: Solve for x
x = 951,324,816,796,881,664/1,118,262,117.10 - Step 6: Final answer
x = 850,717,199.71
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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.