Finding the Fourth Proportional to 678,999.68, 1,018,609.68 and 229,748.12
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Solution
The fourth proportional to 678,999.68, 1,018,609.68 and 229,748.12 is: 344,659.45
Step by Step Solution
- Step 1: Write the proportion equation
678,999.68 : 1,018,609.68 = 229,748.12 : x - Step 2: Convert to fraction form
678,999.68/1,018,609.68 = 229,748.12/x - Step 3: Cross multiply
678,999.68x = 1,018,609.68 × 229,748.12 - Step 4: Simplify right side
678,999.68x = 234,023,658,993.80 - Step 5: Solve for x
x = 234,023,658,993.80/678,999.68 - Step 6: Final answer
x = 344,659.45
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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.