Finding the Fourth Proportional to 717,199.17, 989,756.63 and 394,920.80
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Solution
The fourth proportional to 717,199.17, 989,756.63 and 394,920.80 is: 545,002.69
Step by Step Solution
- Step 1: Write the proportion equation
717,199.17 : 989,756.63 = 394,920.80 : x - Step 2: Convert to fraction form
717,199.17/989,756.63 = 394,920.80/x - Step 3: Cross multiply
717,199.17x = 989,756.63 × 394,920.80 - Step 4: Simplify right side
717,199.17x = 390,875,480,124.90 - Step 5: Solve for x
x = 390,875,480,124.90/717,199.17 - Step 6: Final answer
x = 545,002.69
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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.