Finding the Fourth Proportional to 515,043.87, 772,407.70 and 356,140.80
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Solution
The fourth proportional to 515,043.87, 772,407.70 and 356,140.80 is: 534,101.88
Step by Step Solution
- Step 1: Write the proportion equation
515,043.87 : 772,407.70 = 356,140.80 : x - Step 2: Convert to fraction form
515,043.87/772,407.70 = 356,140.80/x - Step 3: Cross multiply
515,043.87x = 772,407.70 × 356,140.80 - Step 4: Simplify right side
515,043.87x = 275,085,895,313.81 - Step 5: Solve for x
x = 275,085,895,313.81/515,043.87 - Step 6: Final answer
x = 534,101.88
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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.