Finding the Fourth Proportional to 499,068.80, 688,716.83 and 315,389.00
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Solution
The fourth proportional to 499,068.80, 688,716.83 and 315,389.00 is: 435,238.00
Step by Step Solution
- Step 1: Write the proportion equation
499,068.80 : 688,716.83 = 315,389.00 : x - Step 2: Convert to fraction form
499,068.80/688,716.83 = 315,389.00/x - Step 3: Cross multiply
499,068.80x = 688,716.83 × 315,389.00 - Step 4: Simplify right side
499,068.80x = 217,213,708,720.05 - Step 5: Solve for x
x = 217,213,708,720.05/499,068.80 - Step 6: Final answer
x = 435,238.00
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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.