Finding the Fourth Proportional to 505,528,435.80, 758,292,653.70 and 198,718,579.80
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Solution
The fourth proportional to 505,528,435.80, 758,292,653.70 and 198,718,579.80 is: 298,077,869.70
Step by Step Solution
- Step 1: Write the proportion equation
505,528,435.80 : 758,292,653.70 = 198,718,579.80 : x - Step 2: Convert to fraction form
505,528,435.80/758,292,653.70 = 198,718,579.80/x - Step 3: Cross multiply
505,528,435.80x = 758,292,653.70 × 198,718,579.80 - Step 4: Simplify right side
505,528,435.80x = 150,686,839,216,037,248 - Step 5: Solve for x
x = 150,686,839,216,037,248/505,528,435.80 - Step 6: Final answer
x = 298,077,869.70
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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.