Finding the Fourth Proportional to 513,655.21, 709,521.49 and 394,271.74
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Solution
The fourth proportional to 513,655.21, 709,521.49 and 394,271.74 is: 544,614.88
Step by Step Solution
- Step 1: Write the proportion equation
513,655.21 : 709,521.49 = 394,271.74 : x - Step 2: Convert to fraction form
513,655.21/709,521.49 = 394,271.74/x - Step 3: Cross multiply
513,655.21x = 709,521.49 × 394,271.74 - Step 4: Simplify right side
513,655.21x = 279,744,272,429.69 - Step 5: Solve for x
x = 279,744,272,429.69/513,655.21 - Step 6: Final answer
x = 544,614.88
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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.