Finding the Fourth Proportional to 381,666,214.51, 526,721,874.26 and 287,414,073.70
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Solution
The fourth proportional to 381,666,214.51, 526,721,874.26 and 287,414,073.70 is: 396,648,364.02
Step by Step Solution
- Step 1: Write the proportion equation
381,666,214.51 : 526,721,874.26 = 287,414,073.70 : x - Step 2: Convert to fraction form
381,666,214.51/526,721,874.26 = 287,414,073.70/x - Step 3: Cross multiply
381,666,214.51x = 526,721,874.26 × 287,414,073.70 - Step 4: Simplify right side
381,666,214.51x = 151,387,279,585,211,904 - Step 5: Solve for x
x = 151,387,279,585,211,904/381,666,214.51 - Step 6: Final answer
x = 396,648,364.02
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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.