Finding the Fourth Proportional to 1,989,889,569.60, 2,985,216,933.60 and 762,962,337.60
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Solution
The fourth proportional to 1,989,889,569.60, 2,985,216,933.60 and 762,962,337.60 is: 1,144,590,194.70
Step by Step Solution
- Step 1: Write the proportion equation
1,989,889,569.60 : 2,985,216,933.60 = 762,962,337.60 : x - Step 2: Convert to fraction form
1,989,889,569.60/2,985,216,933.60 = 762,962,337.60/x - Step 3: Cross multiply
1,989,889,569.60x = 2,985,216,933.60 × 762,962,337.60 - Step 4: Simplify right side
1,989,889,569.60x = 2,277,608,089,902,560,000 - Step 5: Solve for x
x = 2,277,608,089,902,560,000/1,989,889,569.60 - Step 6: Final answer
x = 1,144,590,194.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.