Finding the Fourth Proportional to 1,119,642,956.80, 1,678,232,716.80 and 392,257,254.40
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Solution
The fourth proportional to 1,119,642,956.80, 1,678,232,716.80 and 392,257,254.40 is: 587,954,359.68
Step by Step Solution
- Step 1: Write the proportion equation
1,119,642,956.80 : 1,678,232,716.80 = 392,257,254.40 : x - Step 2: Convert to fraction form
1,119,642,956.80/1,678,232,716.80 = 392,257,254.40/x - Step 3: Cross multiply
1,119,642,956.80x = 1,678,232,716.80 × 392,257,254.40 - Step 4: Simplify right side
1,119,642,956.80x = 658,298,957,736,220,672 - Step 5: Solve for x
x = 658,298,957,736,220,672/1,119,642,956.80 - Step 6: Final answer
x = 587,954,359.68
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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.