Finding the Fourth Proportional to 877,515,517,459.70, 1,210,981,231,348.20 and 486,889,154,138.80
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Solution
The fourth proportional to 877,515,517,459.70, 1,210,981,231,348.20 and 486,889,154,138.80 is: 671,912,479,811.12
Step by Step Solution
- Step 1: Write the proportion equation
877,515,517,459.70 : 1,210,981,231,348.20 = 486,889,154,138.80 : x - Step 2: Convert to fraction form
877,515,517,459.70/1,210,981,231,348.20 = 486,889,154,138.80/x - Step 3: Cross multiply
877,515,517,459.70x = 1,210,981,231,348.20 × 486,889,154,138.80 - Step 4: Simplify right side
877,515,517,459.70x = 589,613,627,409,087,535,775,744 - Step 5: Solve for x
x = 589,613,627,409,087,535,775,744/877,515,517,459.70 - Step 6: Final answer
x = 671,912,479,811.12
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Double scale
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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.