Finding the Fourth Proportional to 745,638.13, 1,028,992.58 and 406,106.38
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Solution
The fourth proportional to 745,638.13, 1,028,992.58 and 406,106.38 is: 560,433.32
Step by Step Solution
- Step 1: Write the proportion equation
745,638.13 : 1,028,992.58 = 406,106.38 : x - Step 2: Convert to fraction form
745,638.13/1,028,992.58 = 406,106.38/x - Step 3: Cross multiply
745,638.13x = 1,028,992.58 × 406,106.38 - Step 4: Simplify right side
745,638.13x = 417,880,451,710.66 - Step 5: Solve for x
x = 417,880,451,710.66/745,638.13 - Step 6: Final answer
x = 560,433.32
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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.