Finding the Fourth Proportional to 972,989.96, 1,342,809.14 and 543,353.09
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Solution
The fourth proportional to 972,989.96, 1,342,809.14 and 543,353.09 is: 749,873.61
Step by Step Solution
- Step 1: Write the proportion equation
972,989.96 : 1,342,809.14 = 543,353.09 : x - Step 2: Convert to fraction form
972,989.96/1,342,809.14 = 543,353.09/x - Step 3: Cross multiply
972,989.96x = 1,342,809.14 × 543,353.09 - Step 4: Simplify right side
972,989.96x = 729,619,486,068.43 - Step 5: Solve for x
x = 729,619,486,068.43/972,989.96 - Step 6: Final answer
x = 749,873.61
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1.5x scale
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.