Finding the Fourth Proportional to 687,859.44, 1,031,391.68 and 266,643.28
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Solution
The fourth proportional to 687,859.44, 1,031,391.68 and 266,643.28 is: 399,810.84
Step by Step Solution
- Step 1: Write the proportion equation
687,859.44 : 1,031,391.68 = 266,643.28 : x - Step 2: Convert to fraction form
687,859.44/1,031,391.68 = 266,643.28/x - Step 3: Cross multiply
687,859.44x = 1,031,391.68 × 266,643.28 - Step 4: Simplify right side
687,859.44x = 275,013,660,519.91 - Step 5: Solve for x
x = 275,013,660,519.91/687,859.44 - Step 6: Final answer
x = 399,810.84
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.