Finding the Fourth Proportional to 812,640,283.74, 1,121,375,131.29 and 450,543,934.05
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Solution
The fourth proportional to 812,640,283.74, 1,121,375,131.29 and 450,543,934.05 is: 621,712,673.25
Step by Step Solution
- Step 1: Write the proportion equation
812,640,283.74 : 1,121,375,131.29 = 450,543,934.05 : x - Step 2: Convert to fraction form
812,640,283.74/1,121,375,131.29 = 450,543,934.05/x - Step 3: Cross multiply
812,640,283.74x = 1,121,375,131.29 × 450,543,934.05 - Step 4: Simplify right side
812,640,283.74x = 505,228,763,197,231,872 - Step 5: Solve for x
x = 505,228,763,197,231,872/812,640,283.74 - Step 6: Final answer
x = 621,712,673.25
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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.