Finding the Fourth Proportional to 515,001,689.91, 710,721,021.74 and 295,027,631.19
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Solution
The fourth proportional to 515,001,689.91, 710,721,021.74 and 295,027,631.19 is: 407,148,837.74
Step by Step Solution
- Step 1: Write the proportion equation
515,001,689.91 : 710,721,021.74 = 295,027,631.19 : x - Step 2: Convert to fraction form
515,001,689.91/710,721,021.74 = 295,027,631.19/x - Step 3: Cross multiply
515,001,689.91x = 710,721,021.74 × 295,027,631.19 - Step 4: Simplify right side
515,001,689.91x = 209,682,339,479,413,568 - Step 5: Solve for x
x = 209,682,339,479,413,568/515,001,689.91 - Step 6: Final answer
x = 407,148,837.74
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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.