Finding the Fourth Proportional to 1,531,356,689.48, 2,113,261,481.94 and 835,995,665.48
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Solution
The fourth proportional to 1,531,356,689.48, 2,113,261,481.94 and 835,995,665.48 is: 1,153,668,149.99
Step by Step Solution
- Step 1: Write the proportion equation
1,531,356,689.48 : 2,113,261,481.94 = 835,995,665.48 : x - Step 2: Convert to fraction form
1,531,356,689.48/2,113,261,481.94 = 835,995,665.48/x - Step 3: Cross multiply
1,531,356,689.48x = 2,113,261,481.94 × 835,995,665.48 - Step 4: Simplify right side
1,531,356,689.48x = 1,766,677,438,927,681,280 - Step 5: Solve for x
x = 1,766,677,438,927,681,280/1,531,356,689.48 - Step 6: Final answer
x = 1,153,668,149.99
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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.