Finding the Fourth Proportional to 731,400.93, 1,009,443.51 and 421,245.99
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Solution
The fourth proportional to 731,400.93, 1,009,443.51 and 421,245.99 is: 581,382.95
Step by Step Solution
- Step 1: Write the proportion equation
731,400.93 : 1,009,443.51 = 421,245.99 : x - Step 2: Convert to fraction form
731,400.93/1,009,443.51 = 421,245.99/x - Step 3: Cross multiply
731,400.93x = 1,009,443.51 × 421,245.99 - Step 4: Simplify right side
731,400.93x = 425,224,030,719.03 - Step 5: Solve for x
x = 425,224,030,719.03/731,400.93 - Step 6: Final answer
x = 581,382.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.