Finding the Fourth Proportional to 1,008,409.80, 1,391,539.74 and 555,700.68
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Solution
The fourth proportional to 1,008,409.80, 1,391,539.74 and 555,700.68 is: 766,830.69
Step by Step Solution
- Step 1: Write the proportion equation
1,008,409.80 : 1,391,539.74 = 555,700.68 : x - Step 2: Convert to fraction form
1,008,409.80/1,391,539.74 = 555,700.68/x - Step 3: Cross multiply
1,008,409.80x = 1,391,539.74 × 555,700.68 - Step 4: Simplify right side
1,008,409.80x = 773,279,579,765.02 - Step 5: Solve for x
x = 773,279,579,765.02/1,008,409.80 - Step 6: Final answer
x = 766,830.69
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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.