Finding the Fourth Proportional to 530,128.44, 731,727.66 and 312,463.62
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Solution
The fourth proportional to 530,128.44, 731,727.66 and 312,463.62 is: 431,288.45
Step by Step Solution
- Step 1: Write the proportion equation
530,128.44 : 731,727.66 = 312,463.62 : x - Step 2: Convert to fraction form
530,128.44/731,727.66 = 312,463.62/x - Step 3: Cross multiply
530,128.44x = 731,727.66 × 312,463.62 - Step 4: Simplify right side
530,128.44x = 228,638,273,497.73 - Step 5: Solve for x
x = 228,638,273,497.73/530,128.44 - Step 6: Final answer
x = 431,288.45
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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.