Finding the Fourth Proportional to 378,755,764.16, 523,043,941.41 and 358,121,386.35
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Solution
The fourth proportional to 378,755,764.16, 523,043,941.41 and 358,121,386.35 is: 494,548,833.70
Step by Step Solution
- Step 1: Write the proportion equation
378,755,764.16 : 523,043,941.41 = 358,121,386.35 : x - Step 2: Convert to fraction form
378,755,764.16/523,043,941.41 = 358,121,386.35/x - Step 3: Cross multiply
378,755,764.16x = 523,043,941.41 × 358,121,386.35 - Step 4: Simplify right side
378,755,764.16x = 187,313,221,419,717,408 - Step 5: Solve for x
x = 187,313,221,419,717,408/378,755,764.16 - Step 6: Final answer
x = 494,548,833.70
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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.