Finding the Fourth Proportional to 387,102,409.20, 580,653,613.80 and 171,691,657.20
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Solution
The fourth proportional to 387,102,409.20, 580,653,613.80 and 171,691,657.20 is: 257,537,485.80
Step by Step Solution
- Step 1: Write the proportion equation
387,102,409.20 : 580,653,613.80 = 171,691,657.20 : x - Step 2: Convert to fraction form
387,102,409.20/580,653,613.80 = 171,691,657.20/x - Step 3: Cross multiply
387,102,409.20x = 580,653,613.80 × 171,691,657.20 - Step 4: Simplify right side
387,102,409.20x = 99,693,381,212,490,768 - Step 5: Solve for x
x = 99,693,381,212,490,768/387,102,409.20 - Step 6: Final answer
x = 257,537,485.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.