Finding the Fourth Proportional to 812,205.84, 1,118,340.55 and 721,404.03
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Solution
The fourth proportional to 812,205.84, 1,118,340.55 and 721,404.03 is: 993,313.94
Step by Step Solution
- Step 1: Write the proportion equation
812,205.84 : 1,118,340.55 = 721,404.03 : x - Step 2: Convert to fraction form
812,205.84/1,118,340.55 = 721,404.03/x - Step 3: Cross multiply
812,205.84x = 1,118,340.55 × 721,404.03 - Step 4: Simplify right side
812,205.84x = 806,775,384,777.95 - Step 5: Solve for x
x = 806,775,384,777.95/812,205.84 - Step 6: Final answer
x = 993,313.94
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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.