Finding the Fourth Proportional to 778,544.16, 1,074,207.12 and 438,946.80
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Solution
The fourth proportional to 778,544.16, 1,074,207.12 and 438,946.80 is: 605,642.94
Step by Step Solution
- Step 1: Write the proportion equation
778,544.16 : 1,074,207.12 = 438,946.80 : x - Step 2: Convert to fraction form
778,544.16/1,074,207.12 = 438,946.80/x - Step 3: Cross multiply
778,544.16x = 1,074,207.12 × 438,946.80 - Step 4: Simplify right side
778,544.16x = 471,519,777,861.22 - Step 5: Solve for x
x = 471,519,777,861.22/778,544.16 - Step 6: Final answer
x = 605,642.94
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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.