Finding the Fourth Proportional to 831,653.80, 1,247,480.70 and 516,725.80
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Solution
The fourth proportional to 831,653.80, 1,247,480.70 and 516,725.80 is: 775,088.70
Step by Step Solution
- Step 1: Write the proportion equation
831,653.80 : 1,247,480.70 = 516,725.80 : x - Step 2: Convert to fraction form
831,653.80/1,247,480.70 = 516,725.80/x - Step 3: Cross multiply
831,653.80x = 1,247,480.70 × 516,725.80 - Step 4: Simplify right side
831,653.80x = 644,605,462,692.06 - Step 5: Solve for x
x = 644,605,462,692.06/831,653.80 - Step 6: Final answer
x = 775,088.70
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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.