Finding the Fourth Proportional to 753,129.90, 1,128,710.70 and 303,482.70
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Solution
The fourth proportional to 753,129.90, 1,128,710.70 and 303,482.70 is: 454,827.47
Step by Step Solution
- Step 1: Write the proportion equation
753,129.90 : 1,128,710.70 = 303,482.70 : x - Step 2: Convert to fraction form
753,129.90/1,128,710.70 = 303,482.70/x - Step 3: Cross multiply
753,129.90x = 1,128,710.70 × 303,482.70 - Step 4: Simplify right side
753,129.90x = 342,544,170,754.89 - Step 5: Solve for x
x = 342,544,170,754.89/753,129.90 - Step 6: Final answer
x = 454,827.47
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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.