Finding the Fourth Proportional to 1,244,703,067.65, 1,717,788,149.87 and 708,877,389.02
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Solution
The fourth proportional to 1,244,703,067.65, 1,717,788,149.87 and 708,877,389.02 is: 978,306,561.79
Step by Step Solution
- Step 1: Write the proportion equation
1,244,703,067.65 : 1,717,788,149.87 = 708,877,389.02 : x - Step 2: Convert to fraction form
1,244,703,067.65/1,717,788,149.87 = 708,877,389.02/x - Step 3: Cross multiply
1,244,703,067.65x = 1,717,788,149.87 × 708,877,389.02 - Step 4: Simplify right side
1,244,703,067.65x = 1,217,701,178,557,208,832 - Step 5: Solve for x
x = 1,217,701,178,557,208,832/1,244,703,067.65 - Step 6: Final answer
x = 978,306,561.79
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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.