Finding the Fourth Proportional to 688,659.84, 1,031,431.68 and 368,245.80
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Solution
The fourth proportional to 688,659.84, 1,031,431.68 and 368,245.80 is: 551,535.55
Step by Step Solution
- Step 1: Write the proportion equation
688,659.84 : 1,031,431.68 = 368,245.80 : x - Step 2: Convert to fraction form
688,659.84/1,031,431.68 = 368,245.80/x - Step 3: Cross multiply
688,659.84x = 1,031,431.68 × 368,245.80 - Step 4: Simplify right side
688,659.84x = 379,820,384,146.94 - Step 5: Solve for x
x = 379,820,384,146.94/688,659.84 - Step 6: Final answer
x = 551,535.55
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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.