Finding the Fourth Proportional to 2,129,980,965.20, 3,193,459,793.40 and 819,376,600.40
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Solution
The fourth proportional to 2,129,980,965.20, 3,193,459,793.40 and 819,376,600.40 is: 1,228,483,386.37
Step by Step Solution
- Step 1: Write the proportion equation
2,129,980,965.20 : 3,193,459,793.40 = 819,376,600.40 : x - Step 2: Convert to fraction form
2,129,980,965.20/3,193,459,793.40 = 819,376,600.40/x - Step 3: Cross multiply
2,129,980,965.20x = 3,193,459,793.40 × 819,376,600.40 - Step 4: Simplify right side
2,129,980,965.20x = 2,616,646,229,030,178,304 - Step 5: Solve for x
x = 2,616,646,229,030,178,304/2,129,980,965.20 - Step 6: Final answer
x = 1,228,483,386.37
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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.