Finding the Fourth Proportional to 660,869,936.58, 912,067,405.51 and 378,649,812.25
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Solution
The fourth proportional to 660,869,936.58, 912,067,405.51 and 378,649,812.25 is: 522,575,067.70
Step by Step Solution
- Step 1: Write the proportion equation
660,869,936.58 : 912,067,405.51 = 378,649,812.25 : x - Step 2: Convert to fraction form
660,869,936.58/912,067,405.51 = 378,649,812.25/x - Step 3: Cross multiply
660,869,936.58x = 912,067,405.51 × 378,649,812.25 - Step 4: Simplify right side
660,869,936.58x = 345,354,151,849,252,544 - Step 5: Solve for x
x = 345,354,151,849,252,544/660,869,936.58 - Step 6: Final answer
x = 522,575,067.70
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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.