Finding the Fourth Proportional to 643,277.70, 964,916.55 and 288,983.70
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Solution
The fourth proportional to 643,277.70, 964,916.55 and 288,983.70 is: 433,475.55
Step by Step Solution
- Step 1: Write the proportion equation
643,277.70 : 964,916.55 = 288,983.70 : x - Step 2: Convert to fraction form
643,277.70/964,916.55 = 288,983.70/x - Step 3: Cross multiply
643,277.70x = 964,916.55 × 288,983.70 - Step 4: Simplify right side
643,277.70x = 278,845,154,810.24 - Step 5: Solve for x
x = 278,845,154,810.24/643,277.70 - Step 6: Final answer
x = 433,475.55
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Similar ratio
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1.5x scale
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.