Finding the Fourth Proportional to 1,208,954,664.60, 1,813,431,996.90 and 442,950,235.80
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Solution
The fourth proportional to 1,208,954,664.60, 1,813,431,996.90 and 442,950,235.80 is: 664,425,353.70
Step by Step Solution
- Step 1: Write the proportion equation
1,208,954,664.60 : 1,813,431,996.90 = 442,950,235.80 : x - Step 2: Convert to fraction form
1,208,954,664.60/1,813,431,996.90 = 442,950,235.80/x - Step 3: Cross multiply
1,208,954,664.60x = 1,813,431,996.90 × 442,950,235.80 - Step 4: Simplify right side
1,208,954,664.60x = 803,260,130,634,119,936 - Step 5: Solve for x
x = 803,260,130,634,119,936/1,208,954,664.60 - Step 6: Final answer
x = 664,425,353.70
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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.