Finding the Fourth Proportional to 530,131.74, 731,584.99 and 288,416.05
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Solution
The fourth proportional to 530,131.74, 731,584.99 and 288,416.05 is: 398,015.89
Step by Step Solution
- Step 1: Write the proportion equation
530,131.74 : 731,584.99 = 288,416.05 : x - Step 2: Convert to fraction form
530,131.74/731,584.99 = 288,416.05/x - Step 3: Cross multiply
530,131.74x = 731,584.99 × 288,416.05 - Step 4: Simplify right side
530,131.74x = 211,000,855,919.43 - Step 5: Solve for x
x = 211,000,855,919.43/530,131.74 - Step 6: Final answer
x = 398,015.89
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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.