Finding the Fourth Proportional to 696,531,423.18, 961,184,545.34 and 378,992,976.06
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Solution
The fourth proportional to 696,531,423.18, 961,184,545.34 and 378,992,976.06 is: 522,994,626.31
Step by Step Solution
- Step 1: Write the proportion equation
696,531,423.18 : 961,184,545.34 = 378,992,976.06 : x - Step 2: Convert to fraction form
696,531,423.18/961,184,545.34 = 378,992,976.06/x - Step 3: Cross multiply
696,531,423.18x = 961,184,545.34 × 378,992,976.06 - Step 4: Simplify right side
696,531,423.18x = 364,282,191,381,284,608 - Step 5: Solve for x
x = 364,282,191,381,284,608/696,531,423.18 - Step 6: Final answer
x = 522,994,626.31
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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.