Finding the Fourth Proportional to 621,805.10, 858,090.99 and 353,533.10
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Solution
The fourth proportional to 621,805.10, 858,090.99 and 353,533.10 is: 487,875.65
Step by Step Solution
- Step 1: Write the proportion equation
621,805.10 : 858,090.99 = 353,533.10 : x - Step 2: Convert to fraction form
621,805.10/858,090.99 = 353,533.10/x - Step 3: Cross multiply
621,805.10x = 858,090.99 × 353,533.10 - Step 4: Simplify right side
621,805.10x = 303,363,567,776.77 - Step 5: Solve for x
x = 303,363,567,776.77/621,805.10 - Step 6: Final answer
x = 487,875.65
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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.