Finding the Fourth Proportional to 2,989,609,992.60, 4,484,391,369.30 and 778,815,432.60
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Solution
The fourth proportional to 2,989,609,992.60, 4,484,391,369.30 and 778,815,432.60 is: 1,168,216,995.82
Step by Step Solution
- Step 1: Write the proportion equation
2,989,609,992.60 : 4,484,391,369.30 = 778,815,432.60 : x - Step 2: Convert to fraction form
2,989,609,992.60/4,484,391,369.30 = 778,815,432.60/x - Step 3: Cross multiply
2,989,609,992.60x = 4,484,391,369.30 × 778,815,432.60 - Step 4: Simplify right side
2,989,609,992.60x = 3,492,513,204,229,086,208 - Step 5: Solve for x
x = 3,492,513,204,229,086,208/2,989,609,992.60 - Step 6: Final answer
x = 1,168,216,995.82
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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.