Finding the Fourth Proportional to 387,073,909.80, 580,610,864.70 and 378,115,957.80
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Solution
The fourth proportional to 387,073,909.80, 580,610,864.70 and 378,115,957.80 is: 567,173,936.70
Step by Step Solution
- Step 1: Write the proportion equation
387,073,909.80 : 580,610,864.70 = 378,115,957.80 : x - Step 2: Convert to fraction form
387,073,909.80/580,610,864.70 = 378,115,957.80/x - Step 3: Cross multiply
387,073,909.80x = 580,610,864.70 × 378,115,957.80 - Step 4: Simplify right side
387,073,909.80x = 219,538,233,215,126,720 - Step 5: Solve for x
x = 219,538,233,215,126,720/387,073,909.80 - Step 6: Final answer
x = 567,173,936.70
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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.