Finding the Fourth Proportional to 763,076.70, 1,145,133.45 and 426,116.70
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Solution
The fourth proportional to 763,076.70, 1,145,133.45 and 426,116.70 is: 639,464.53
Step by Step Solution
- Step 1: Write the proportion equation
763,076.70 : 1,145,133.45 = 426,116.70 : x - Step 2: Convert to fraction form
763,076.70/1,145,133.45 = 426,116.70/x - Step 3: Cross multiply
763,076.70x = 1,145,133.45 × 426,116.70 - Step 4: Simplify right side
763,076.70x = 487,960,486,773.62 - Step 5: Solve for x
x = 487,960,486,773.62/763,076.70 - Step 6: Final answer
x = 639,464.53
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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.