Finding the Fourth Proportional to 419,371.30, 578,756.70 and 315,820.06
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Solution
The fourth proportional to 419,371.30, 578,756.70 and 315,820.06 is: 435,849.99
Step by Step Solution
- Step 1: Write the proportion equation
419,371.30 : 578,756.70 = 315,820.06 : x - Step 2: Convert to fraction form
419,371.30/578,756.70 = 315,820.06/x - Step 3: Cross multiply
419,371.30x = 578,756.70 × 315,820.06 - Step 4: Simplify right side
419,371.30x = 182,782,975,719.40 - Step 5: Solve for x
x = 182,782,975,719.40/419,371.30 - Step 6: Final answer
x = 435,849.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.