Finding the Fourth Proportional to 578,715.74, 798,627.61 and 320,609.46
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Solution
The fourth proportional to 578,715.74, 798,627.61 and 320,609.46 is: 442,440.99
Step by Step Solution
- Step 1: Write the proportion equation
578,715.74 : 798,627.61 = 320,609.46 : x - Step 2: Convert to fraction form
578,715.74/798,627.61 = 320,609.46/x - Step 3: Cross multiply
578,715.74x = 798,627.61 × 320,609.46 - Step 4: Simplify right side
578,715.74x = 256,047,566,783.19 - Step 5: Solve for x
x = 256,047,566,783.19/578,715.74 - Step 6: Final answer
x = 442,440.99
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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.