Finding the Fourth Proportional to 1,954,138,220.40, 2,931,207,330.60 and 661,673,708.40
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Solution
The fourth proportional to 1,954,138,220.40, 2,931,207,330.60 and 661,673,708.40 is: 992,510,562.60
Step by Step Solution
- Step 1: Write the proportion equation
1,954,138,220.40 : 2,931,207,330.60 = 661,673,708.40 : x - Step 2: Convert to fraction form
1,954,138,220.40/2,931,207,330.60 = 661,673,708.40/x - Step 3: Cross multiply
1,954,138,220.40x = 2,931,207,330.60 × 661,673,708.40 - Step 4: Simplify right side
1,954,138,220.40x = 1,939,502,824,527,366,656 - Step 5: Solve for x
x = 1,939,502,824,527,366,656/1,954,138,220.40 - Step 6: Final answer
x = 992,510,562.60
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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.