Finding the Fourth Proportional to 778,881.28, 1,074,888.84 and 439,349.44
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Solution
The fourth proportional to 778,881.28, 1,074,888.84 and 439,349.44 is: 606,320.66
Step by Step Solution
- Step 1: Write the proportion equation
778,881.28 : 1,074,888.84 = 439,349.44 : x - Step 2: Convert to fraction form
778,881.28/1,074,888.84 = 439,349.44/x - Step 3: Cross multiply
778,881.28x = 1,074,888.84 × 439,349.44 - Step 4: Simplify right side
778,881.28x = 472,251,809,916.25 - Step 5: Solve for x
x = 472,251,809,916.25/778,881.28 - Step 6: Final answer
x = 606,320.66
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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.