Finding the Fourth Proportional to 298,382,963.71, 408,786,118.67 and 287,199,637.62
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Solution
The fourth proportional to 298,382,963.71, 408,786,118.67 and 287,199,637.62 is: 393,464,907.27
Step by Step Solution
- Step 1: Write the proportion equation
298,382,963.71 : 408,786,118.67 = 287,199,637.62 : x - Step 2: Convert to fraction form
298,382,963.71/408,786,118.67 = 287,199,637.62/x - Step 3: Cross multiply
298,382,963.71x = 408,786,118.67 × 287,199,637.62 - Step 4: Simplify right side
298,382,963.71x = 117,403,225,146,110,320 - Step 5: Solve for x
x = 117,403,225,146,110,320/298,382,963.71 - Step 6: Final answer
x = 393,464,907.27
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.