Finding the Fourth Proportional to 641,971.98, 885,910.44 and 355,485.96
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Solution
The fourth proportional to 641,971.98, 885,910.44 and 355,485.96 is: 490,564.59
Step by Step Solution
- Step 1: Write the proportion equation
641,971.98 : 885,910.44 = 355,485.96 : x - Step 2: Convert to fraction form
641,971.98/885,910.44 = 355,485.96/x - Step 3: Cross multiply
641,971.98x = 885,910.44 × 355,485.96 - Step 4: Simplify right side
641,971.98x = 314,928,723,237.42 - Step 5: Solve for x
x = 314,928,723,237.42/641,971.98 - Step 6: Final answer
x = 490,564.59
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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.