Finding the Fourth Proportional to 642,434.70, 963,110.16 and 405,254.55
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Solution
The fourth proportional to 642,434.70, 963,110.16 and 405,254.55 is: 607,540.00
Step by Step Solution
- Step 1: Write the proportion equation
642,434.70 : 963,110.16 = 405,254.55 : x - Step 2: Convert to fraction form
642,434.70/963,110.16 = 405,254.55/x - Step 3: Cross multiply
642,434.70x = 963,110.16 × 405,254.55 - Step 4: Simplify right side
642,434.70x = 390,304,774,491.23 - Step 5: Solve for x
x = 390,304,774,491.23/642,434.70 - Step 6: Final answer
x = 607,540.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.