Finding the Fourth Proportional to 914,079,512.16, 1,261,815,911.70 and 617,124,010.26
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Solution
The fourth proportional to 914,079,512.16, 1,261,815,911.70 and 617,124,010.26 is: 851,891,859.82
Step by Step Solution
- Step 1: Write the proportion equation
914,079,512.16 : 1,261,815,911.70 = 617,124,010.26 : x - Step 2: Convert to fraction form
914,079,512.16/1,261,815,911.70 = 617,124,010.26/x - Step 3: Cross multiply
914,079,512.16x = 1,261,815,911.70 × 617,124,010.26 - Step 4: Simplify right side
914,079,512.16x = 778,696,895,638,182,016 - Step 5: Solve for x
x = 778,696,895,638,182,016/914,079,512.16 - Step 6: Final answer
x = 851,891,859.82
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Double scale
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1.5x scale
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.