Finding the Fourth Proportional to 990,960,021.08, 1,367,611,976.58 and 545,001,960.68
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Solution
The fourth proportional to 990,960,021.08, 1,367,611,976.58 and 545,001,960.68 is: 752,150,634.57
Step by Step Solution
- Step 1: Write the proportion equation
990,960,021.08 : 1,367,611,976.58 = 545,001,960.68 : x - Step 2: Convert to fraction form
990,960,021.08/1,367,611,976.58 = 545,001,960.68/x - Step 3: Cross multiply
990,960,021.08x = 1,367,611,976.58 × 545,001,960.68 - Step 4: Simplify right side
990,960,021.08x = 745,351,208,685,550,080 - Step 5: Solve for x
x = 745,351,208,685,550,080/990,960,021.08 - Step 6: Final answer
x = 752,150,634.57
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1.5x scale
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.