Finding the Fourth Proportional to 407,779.38, 611,669.07 and 127,320.66
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Solution
The fourth proportional to 407,779.38, 611,669.07 and 127,320.66 is: 190,980.99
Step by Step Solution
- Step 1: Write the proportion equation
407,779.38 : 611,669.07 = 127,320.66 : x - Step 2: Convert to fraction form
407,779.38/611,669.07 = 127,320.66/x - Step 3: Cross multiply
407,779.38x = 611,669.07 × 127,320.66 - Step 4: Simplify right side
407,779.38x = 77,878,109,693.99 - Step 5: Solve for x
x = 77,878,109,693.99/407,779.38 - Step 6: Final answer
x = 190,980.99
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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.