Finding the Fourth Proportional to 660,512,083.40, 990,768,125.10 and 442,833,849.80
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Solution
The fourth proportional to 660,512,083.40, 990,768,125.10 and 442,833,849.80 is: 664,250,774.70
Step by Step Solution
- Step 1: Write the proportion equation
660,512,083.40 : 990,768,125.10 = 442,833,849.80 : x - Step 2: Convert to fraction form
660,512,083.40/990,768,125.10 = 442,833,849.80/x - Step 3: Cross multiply
660,512,083.40x = 990,768,125.10 × 442,833,849.80 - Step 4: Simplify right side
660,512,083.40x = 438,745,663,097,161,024 - Step 5: Solve for x
x = 438,745,663,097,161,024/660,512,083.40 - Step 6: Final answer
x = 664,250,774.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.