Finding the Fourth Proportional to 647,815.60, 971,431.80 and 292,646.80
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Solution
The fourth proportional to 647,815.60, 971,431.80 and 292,646.80 is: 438,838.47
Step by Step Solution
- Step 1: Write the proportion equation
647,815.60 : 971,431.80 = 292,646.80 : x - Step 2: Convert to fraction form
647,815.60/971,431.80 = 292,646.80/x - Step 3: Cross multiply
647,815.60x = 971,431.80 × 292,646.80 - Step 4: Simplify right side
647,815.60x = 284,286,407,688.24 - Step 5: Solve for x
x = 284,286,407,688.24/647,815.60 - Step 6: Final answer
x = 438,838.47
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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.