Finding the Fourth Proportional to 992,441,403.60, 1,488,662,105.40 and 977,135,902.80
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Solution
The fourth proportional to 992,441,403.60, 1,488,662,105.40 and 977,135,902.80 is: 1,465,703,854.20
Step by Step Solution
- Step 1: Write the proportion equation
992,441,403.60 : 1,488,662,105.40 = 977,135,902.80 : x - Step 2: Convert to fraction form
992,441,403.60/1,488,662,105.40 = 977,135,902.80/x - Step 3: Cross multiply
992,441,403.60x = 1,488,662,105.40 × 977,135,902.80 - Step 4: Simplify right side
992,441,403.60x = 1,454,625,190,324,177,664 - Step 5: Solve for x
x = 1,454,625,190,324,177,664/992,441,403.60 - Step 6: Final answer
x = 1,465,703,854.20
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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.