Finding the Fourth Proportional to 696,887,508.05, 961,716,991.57 and 379,356,883.28
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Solution
The fourth proportional to 696,887,508.05, 961,716,991.57 and 379,356,883.28 is: 523,519,156.68
Step by Step Solution
- Step 1: Write the proportion equation
696,887,508.05 : 961,716,991.57 = 379,356,883.28 : x - Step 2: Convert to fraction form
696,887,508.05/961,716,991.57 = 379,356,883.28/x - Step 3: Cross multiply
696,887,508.05x = 961,716,991.57 × 379,356,883.28 - Step 4: Simplify right side
696,887,508.05x = 364,833,960,513,656,256 - Step 5: Solve for x
x = 364,833,960,513,656,256/696,887,508.05 - Step 6: Final answer
x = 523,519,156.68
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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.