Finding the Fourth Proportional to 1,490,310,907.84, 2,056,642,653.92 and 821,279,957.50
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Solution
The fourth proportional to 1,490,310,907.84, 2,056,642,653.92 and 821,279,957.50 is: 1,133,373,836.64
Step by Step Solution
- Step 1: Write the proportion equation
1,490,310,907.84 : 2,056,642,653.92 = 821,279,957.50 : x - Step 2: Convert to fraction form
1,490,310,907.84/2,056,642,653.92 = 821,279,957.50/x - Step 3: Cross multiply
1,490,310,907.84x = 2,056,642,653.92 × 821,279,957.50 - Step 4: Simplify right side
1,490,310,907.84x = 1,689,079,391,404,104,960 - Step 5: Solve for x
x = 1,689,079,391,404,104,960/1,490,310,907.84 - Step 6: Final answer
x = 1,133,373,836.64
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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.