Finding the Fourth Proportional to 687,660.03, 1,031,891.40 and 288,270.09
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Solution
The fourth proportional to 687,660.03, 1,031,891.40 and 288,270.09 is: 432,573.38
Step by Step Solution
- Step 1: Write the proportion equation
687,660.03 : 1,031,891.40 = 288,270.09 : x - Step 2: Convert to fraction form
687,660.03/1,031,891.40 = 288,270.09/x - Step 3: Cross multiply
687,660.03x = 1,031,891.40 × 288,270.09 - Step 4: Simplify right side
687,660.03x = 297,463,426,748.23 - Step 5: Solve for x
x = 297,463,426,748.23/687,660.03 - Step 6: Final answer
x = 432,573.38
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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.