Finding the Fourth Proportional to 778,583.68, 1,074,442.56 and 420,887.68
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Solution
The fourth proportional to 778,583.68, 1,074,442.56 and 420,887.68 is: 580,823.42
Step by Step Solution
- Step 1: Write the proportion equation
778,583.68 : 1,074,442.56 = 420,887.68 : x - Step 2: Convert to fraction form
778,583.68/1,074,442.56 = 420,887.68/x - Step 3: Cross multiply
778,583.68x = 1,074,442.56 × 420,887.68 - Step 4: Simplify right side
778,583.68x = 452,219,636,371.66 - Step 5: Solve for x
x = 452,219,636,371.66/778,583.68 - Step 6: Final answer
x = 580,823.42
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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.