Finding the Fourth Proportional to 817,379.49, 1,128,149.33 and 477,957.09
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Solution
The fourth proportional to 817,379.49, 1,128,149.33 and 477,957.09 is: 659,677.63
Step by Step Solution
- Step 1: Write the proportion equation
817,379.49 : 1,128,149.33 = 477,957.09 : x - Step 2: Convert to fraction form
817,379.49/1,128,149.33 = 477,957.09/x - Step 3: Cross multiply
817,379.49x = 1,128,149.33 × 477,957.09 - Step 4: Simplify right side
817,379.49x = 539,206,968,462.46 - Step 5: Solve for x
x = 539,206,968,462.46/817,379.49 - Step 6: Final answer
x = 659,677.63
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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.