Finding the Fourth Proportional to 19,131,465.12, 28,688,560.84 and 5,481,486.87
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Solution
The fourth proportional to 19,131,465.12, 28,688,560.84 and 5,481,486.87 is: 8,219,755.70
Step by Step Solution
- Step 1: Write the proportion equation
19,131,465.12 : 28,688,560.84 = 5,481,486.87 : x - Step 2: Convert to fraction form
19,131,465.12/28,688,560.84 = 5,481,486.87/x - Step 3: Cross multiply
19,131,465.12x = 28,688,560.84 × 5,481,486.87 - Step 4: Simplify right side
19,131,465.12x = 157,255,969,563,656.19 - Step 5: Solve for x
x = 157,255,969,563,656.19/19,131,465.12 - Step 6: Final answer
x = 8,219,755.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.