Finding the Fourth Proportional to 885,720.20, 1,328,580.30 and 511,305.80
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Solution
The fourth proportional to 885,720.20, 1,328,580.30 and 511,305.80 is: 766,958.70
Step by Step Solution
- Step 1: Write the proportion equation
885,720.20 : 1,328,580.30 = 511,305.80 : x - Step 2: Convert to fraction form
885,720.20/1,328,580.30 = 511,305.80/x - Step 3: Cross multiply
885,720.20x = 1,328,580.30 × 511,305.80 - Step 4: Simplify right side
885,720.20x = 679,310,813,155.74 - Step 5: Solve for x
x = 679,310,813,155.74/885,720.20 - Step 6: Final answer
x = 766,958.70
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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.