Finding the Fourth Proportional to 1,993,815,220.80, 2,990,722,831.20 and 960,693,916.80
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Solution
The fourth proportional to 1,993,815,220.80, 2,990,722,831.20 and 960,693,916.80 is: 1,441,040,875.20
Step by Step Solution
- Step 1: Write the proportion equation
1,993,815,220.80 : 2,990,722,831.20 = 960,693,916.80 : x - Step 2: Convert to fraction form
1,993,815,220.80/2,990,722,831.20 = 960,693,916.80/x - Step 3: Cross multiply
1,993,815,220.80x = 2,990,722,831.20 × 960,693,916.80 - Step 4: Simplify right side
1,993,815,220.80x = 2,873,169,230,768,712,704 - Step 5: Solve for x
x = 2,873,169,230,768,712,704/1,993,815,220.80 - Step 6: Final answer
x = 1,441,040,875.20
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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.