Finding the Fourth Proportional to 491,968,718.02, 678,924,896.79 and 293,747,534.52
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Solution
The fourth proportional to 491,968,718.02, 678,924,896.79 and 293,747,534.52 is: 405,376,413.68
Step by Step Solution
- Step 1: Write the proportion equation
491,968,718.02 : 678,924,896.79 = 293,747,534.52 : x - Step 2: Convert to fraction form
491,968,718.02/678,924,896.79 = 293,747,534.52/x - Step 3: Cross multiply
491,968,718.02x = 678,924,896.79 × 293,747,534.52 - Step 4: Simplify right side
491,968,718.02x = 199,432,514,554,863,584 - Step 5: Solve for x
x = 199,432,514,554,863,584/491,968,718.02 - Step 6: Final answer
x = 405,376,413.68
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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.