Finding the Fourth Proportional to 995,328,014.20, 1,492,992,021.30 and 612,591,220.60
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Solution
The fourth proportional to 995,328,014.20, 1,492,992,021.30 and 612,591,220.60 is: 918,886,830.90
Step by Step Solution
- Step 1: Write the proportion equation
995,328,014.20 : 1,492,992,021.30 = 612,591,220.60 : x - Step 2: Convert to fraction form
995,328,014.20/1,492,992,021.30 = 612,591,220.60/x - Step 3: Cross multiply
995,328,014.20x = 1,492,992,021.30 × 612,591,220.60 - Step 4: Simplify right side
995,328,014.20x = 914,593,804,674,228,224 - Step 5: Solve for x
x = 914,593,804,674,228,224/995,328,014.20 - Step 6: Final answer
x = 918,886,830.90
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Double scale
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Similar ratio
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1.5x scale
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.