Finding the Fourth Proportional to 519,985.20, 780,050.70 and 204,368.70
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Solution
The fourth proportional to 519,985.20, 780,050.70 and 204,368.70 is: 306,581.70
Step by Step Solution
- Step 1: Write the proportion equation
519,985.20 : 780,050.70 = 204,368.70 : x - Step 2: Convert to fraction form
519,985.20/780,050.70 = 204,368.70/x - Step 3: Cross multiply
519,985.20x = 780,050.70 × 204,368.70 - Step 4: Simplify right side
519,985.20x = 159,417,947,493.09 - Step 5: Solve for x
x = 159,417,947,493.09/519,985.20 - Step 6: Final answer
x = 306,581.70
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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.