Finding the Fourth Proportional to 1,085,755,188.99, 1,498,222,273.25 and 609,336,286.75
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Solution
The fourth proportional to 1,085,755,188.99, 1,498,222,273.25 and 609,336,286.75 is: 840,816,793.66
Step by Step Solution
- Step 1: Write the proportion equation
1,085,755,188.99 : 1,498,222,273.25 = 609,336,286.75 : x - Step 2: Convert to fraction form
1,085,755,188.99/1,498,222,273.25 = 609,336,286.75/x - Step 3: Cross multiply
1,085,755,188.99x = 1,498,222,273.25 × 609,336,286.75 - Step 4: Simplify right side
1,085,755,188.99x = 912,921,196,708,298,880 - Step 5: Solve for x
x = 912,921,196,708,298,880/1,085,755,188.99 - Step 6: Final answer
x = 840,816,793.66
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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.