Finding the Fourth Proportional to 778,808.69, 1,074,769.99 and 456,751.07
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Solution
The fourth proportional to 778,808.69, 1,074,769.99 and 456,751.07 is: 630,324.69
Step by Step Solution
- Step 1: Write the proportion equation
778,808.69 : 1,074,769.99 = 456,751.07 : x - Step 2: Convert to fraction form
778,808.69/1,074,769.99 = 456,751.07/x - Step 3: Cross multiply
778,808.69x = 1,074,769.99 × 456,751.07 - Step 4: Simplify right side
778,808.69x = 490,902,342,936.39 - Step 5: Solve for x
x = 490,902,342,936.39/778,808.69 - Step 6: Final answer
x = 630,324.69
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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.