Finding the Fourth Proportional to 688,751.68, 1,030,105.84 and 613,381.68
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Solution
The fourth proportional to 688,751.68, 1,030,105.84 and 613,381.68 is: 917,381.50
Step by Step Solution
- Step 1: Write the proportion equation
688,751.68 : 1,030,105.84 = 613,381.68 : x - Step 2: Convert to fraction form
688,751.68/1,030,105.84 = 613,381.68/x - Step 3: Cross multiply
688,751.68x = 1,030,105.84 × 613,381.68 - Step 4: Simplify right side
688,751.68x = 631,848,050,717.01 - Step 5: Solve for x
x = 631,848,050,717.01/688,751.68 - Step 6: Final answer
x = 917,381.50
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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.