Finding the Fourth Proportional to 1,807,936,821.12, 2,711,930,425.92 and 515,472,309.12
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Solution
The fourth proportional to 1,807,936,821.12, 2,711,930,425.92 and 515,472,309.12 is: 773,215,646.97
Step by Step Solution
- Step 1: Write the proportion equation
1,807,936,821.12 : 2,711,930,425.92 = 515,472,309.12 : x - Step 2: Convert to fraction form
1,807,936,821.12/2,711,930,425.92 = 515,472,309.12/x - Step 3: Cross multiply
1,807,936,821.12x = 2,711,930,425.92 × 515,472,309.12 - Step 4: Simplify right side
1,807,936,821.12x = 1,397,925,038,821,767,680 - Step 5: Solve for x
x = 1,397,925,038,821,767,680/1,807,936,821.12 - Step 6: Final answer
x = 773,215,646.97
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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.