Finding the Fourth Proportional to 1,328,614,351.20, 1,992,921,526.80 and 775,348,840.80
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Solution
The fourth proportional to 1,328,614,351.20, 1,992,921,526.80 and 775,348,840.80 is: 1,163,023,261.20
Step by Step Solution
- Step 1: Write the proportion equation
1,328,614,351.20 : 1,992,921,526.80 = 775,348,840.80 : x - Step 2: Convert to fraction form
1,328,614,351.20/1,992,921,526.80 = 775,348,840.80/x - Step 3: Cross multiply
1,328,614,351.20x = 1,992,921,526.80 × 775,348,840.80 - Step 4: Simplify right side
1,328,614,351.20x = 1,545,209,395,609,745,920 - Step 5: Solve for x
x = 1,545,209,395,609,745,920/1,328,614,351.20 - Step 6: Final answer
x = 1,163,023,261.20
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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.