Finding the Fourth Proportional to 378,593,086.40, 567,497,719.20 and 205,704,612.80
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Solution
The fourth proportional to 378,593,086.40, 567,497,719.20 and 205,704,612.80 is: 308,343,978.76
Step by Step Solution
- Step 1: Write the proportion equation
378,593,086.40 : 567,497,719.20 = 205,704,612.80 : x - Step 2: Convert to fraction form
378,593,086.40/567,497,719.20 = 205,704,612.80/x - Step 3: Cross multiply
378,593,086.40x = 567,497,719.20 × 205,704,612.80 - Step 4: Simplify right side
378,593,086.40x = 116,736,898,592,919,136 - Step 5: Solve for x
x = 116,736,898,592,919,136/378,593,086.40 - Step 6: Final answer
x = 308,343,978.76
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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.