Finding the Fourth Proportional to 442,812.70, 664,219.05 and 418,318.30
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Solution
The fourth proportional to 442,812.70, 664,219.05 and 418,318.30 is: 627,477.45
Step by Step Solution
- Step 1: Write the proportion equation
442,812.70 : 664,219.05 = 418,318.30 : x - Step 2: Convert to fraction form
442,812.70/664,219.05 = 418,318.30/x - Step 3: Cross multiply
442,812.70x = 664,219.05 × 418,318.30 - Step 4: Simplify right side
442,812.70x = 277,854,983,823.62 - Step 5: Solve for x
x = 277,854,983,823.62/442,812.70 - Step 6: Final answer
x = 627,477.45
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1.5x scale
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.