Finding the Fourth Proportional to 1,328,605,220.80, 1,992,907,831.20 and 454,916,216.80
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Solution
The fourth proportional to 1,328,605,220.80, 1,992,907,831.20 and 454,916,216.80 is: 682,374,325.20
Step by Step Solution
- Step 1: Write the proportion equation
1,328,605,220.80 : 1,992,907,831.20 = 454,916,216.80 : x - Step 2: Convert to fraction form
1,328,605,220.80/1,992,907,831.20 = 454,916,216.80/x - Step 3: Cross multiply
1,328,605,220.80x = 1,992,907,831.20 × 454,916,216.80 - Step 4: Simplify right side
1,328,605,220.80x = 906,606,091,000,596,992 - Step 5: Solve for x
x = 906,606,091,000,596,992/1,328,605,220.80 - Step 6: Final answer
x = 682,374,325.20
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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.