Finding the Fourth Proportional to 543,423.80, 815,135.70 and 403,455.80
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Solution
The fourth proportional to 543,423.80, 815,135.70 and 403,455.80 is: 605,183.70
Step by Step Solution
- Step 1: Write the proportion equation
543,423.80 : 815,135.70 = 403,455.80 : x - Step 2: Convert to fraction form
543,423.80/815,135.70 = 403,455.80/x - Step 3: Cross multiply
543,423.80x = 815,135.70 × 403,455.80 - Step 4: Simplify right side
543,423.80x = 328,871,225,952.06 - Step 5: Solve for x
x = 328,871,225,952.06/543,423.80 - Step 6: Final answer
x = 605,183.70
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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.