Finding the Fourth Proportional to 809,348.70, 1,215,007.20 and 409,783.80
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Solution
The fourth proportional to 809,348.70, 1,215,007.20 and 409,783.80 is: 615,173.99
Step by Step Solution
- Step 1: Write the proportion equation
809,348.70 : 1,215,007.20 = 409,783.80 : x - Step 2: Convert to fraction form
809,348.70/1,215,007.20 = 409,783.80/x - Step 3: Cross multiply
809,348.70x = 1,215,007.20 × 409,783.80 - Step 4: Simplify right side
809,348.70x = 497,890,267,443.36 - Step 5: Solve for x
x = 497,890,267,443.36/809,348.70 - Step 6: Final answer
x = 615,173.99
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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.