Finding the Fourth Proportional to 813,067,732.09, 1,219,627,911.84 and 387,063,962.18
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Solution
The fourth proportional to 813,067,732.09, 1,219,627,911.84 and 387,063,962.18 is: 580,608,470.01
Step by Step Solution
- Step 1: Write the proportion equation
813,067,732.09 : 1,219,627,911.84 = 387,063,962.18 : x - Step 2: Convert to fraction form
813,067,732.09/1,219,627,911.84 = 387,063,962.18/x - Step 3: Cross multiply
813,067,732.09x = 1,219,627,911.84 × 387,063,962.18 - Step 4: Simplify right side
813,067,732.09x = 472,074,011,942,110,080 - Step 5: Solve for x
x = 472,074,011,942,110,080/813,067,732.09 - Step 6: Final answer
x = 580,608,470.01
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1.5x scale
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.