Finding the Fourth Proportional to 745,324.68, 1,028,640.96 and 423,139.08
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Solution
The fourth proportional to 745,324.68, 1,028,640.96 and 423,139.08 is: 583,984.67
Step by Step Solution
- Step 1: Write the proportion equation
745,324.68 : 1,028,640.96 = 423,139.08 : x - Step 2: Convert to fraction form
745,324.68/1,028,640.96 = 423,139.08/x - Step 3: Cross multiply
745,324.68x = 1,028,640.96 × 423,139.08 - Step 4: Simplify right side
745,324.68x = 435,258,189,464.72 - Step 5: Solve for x
x = 435,258,189,464.72/745,324.68 - Step 6: Final answer
x = 583,984.67
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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.