Finding the Fourth Proportional to 378,603,815.44, 522,497,159.40 and 213,531,154.96
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Solution
The fourth proportional to 378,603,815.44, 522,497,159.40 and 213,531,154.96 is: 294,686,470.02
Step by Step Solution
- Step 1: Write the proportion equation
378,603,815.44 : 522,497,159.40 = 213,531,154.96 : x - Step 2: Convert to fraction form
378,603,815.44/522,497,159.40 = 213,531,154.96/x - Step 3: Cross multiply
378,603,815.44x = 522,497,159.40 × 213,531,154.96 - Step 4: Simplify right side
378,603,815.44x = 111,569,421,910,001,216 - Step 5: Solve for x
x = 111,569,421,910,001,216/378,603,815.44 - Step 6: Final answer
x = 294,686,470.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.