Finding the Fourth Proportional to 778,578.68, 1,074,435.66 and 420,882.68
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Solution
The fourth proportional to 778,578.68, 1,074,435.66 and 420,882.68 is: 580,816.52
Step by Step Solution
- Step 1: Write the proportion equation
778,578.68 : 1,074,435.66 = 420,882.68 : x - Step 2: Convert to fraction form
778,578.68/1,074,435.66 = 420,882.68/x - Step 3: Cross multiply
778,578.68x = 1,074,435.66 × 420,882.68 - Step 4: Simplify right side
778,578.68x = 452,211,360,068.37 - Step 5: Solve for x
x = 452,211,360,068.37/778,578.68 - Step 6: Final answer
x = 580,816.52
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.