Finding the Fourth Proportional to 828,949,968.63, 1,143,537,981.39 and 494,186,605.74
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Solution
The fourth proportional to 828,949,968.63, 1,143,537,981.39 and 494,186,605.74 is: 681,731,316.66
Step by Step Solution
- Step 1: Write the proportion equation
828,949,968.63 : 1,143,537,981.39 = 494,186,605.74 : x - Step 2: Convert to fraction form
828,949,968.63/1,143,537,981.39 = 494,186,605.74/x - Step 3: Cross multiply
828,949,968.63x = 1,143,537,981.39 × 494,186,605.74 - Step 4: Simplify right side
828,949,968.63x = 565,121,153,557,895,424 - Step 5: Solve for x
x = 565,121,153,557,895,424/828,949,968.63 - Step 6: Final answer
x = 681,731,316.66
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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.