Finding the Fourth Proportional to 438,431.80, 657,647.70 and 425,309.80
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Solution
The fourth proportional to 438,431.80, 657,647.70 and 425,309.80 is: 637,964.70
Step by Step Solution
- Step 1: Write the proportion equation
438,431.80 : 657,647.70 = 425,309.80 : x - Step 2: Convert to fraction form
438,431.80/657,647.70 = 425,309.80/x - Step 3: Cross multiply
438,431.80x = 657,647.70 × 425,309.80 - Step 4: Simplify right side
438,431.80x = 279,704,011,757.46 - Step 5: Solve for x
x = 279,704,011,757.46/438,431.80 - Step 6: Final answer
x = 637,964.70
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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.