Finding the Fourth Proportional to 745,494.40, 1,028,793.99 and 405,962.38
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Solution
The fourth proportional to 745,494.40, 1,028,793.99 and 405,962.38 is: 560,234.47
Step by Step Solution
- Step 1: Write the proportion equation
745,494.40 : 1,028,793.99 = 405,962.38 : x - Step 2: Convert to fraction form
745,494.40/1,028,793.99 = 405,962.38/x - Step 3: Cross multiply
745,494.40x = 1,028,793.99 × 405,962.38 - Step 4: Simplify right side
745,494.40x = 417,651,656,710.10 - Step 5: Solve for x
x = 417,651,656,710.10/745,494.40 - Step 6: Final answer
x = 560,234.47
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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.