Finding the Fourth Proportional to 660,318,364.44, 911,219,647.68 and 378,051,440.40
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Solution
The fourth proportional to 660,318,364.44, 911,219,647.68 and 378,051,440.40 is: 521,699,711.65
Step by Step Solution
- Step 1: Write the proportion equation
660,318,364.44 : 911,219,647.68 = 378,051,440.40 : x - Step 2: Convert to fraction form
660,318,364.44/911,219,647.68 = 378,051,440.40/x - Step 3: Cross multiply
660,318,364.44x = 911,219,647.68 × 378,051,440.40 - Step 4: Simplify right side
660,318,364.44x = 344,487,900,326,204,480 - Step 5: Solve for x
x = 344,487,900,326,204,480/660,318,364.44 - Step 6: Final answer
x = 521,699,711.65
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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.