Finding the Fourth Proportional to 768,006.80, 1,152,010.20 and 430,701.20
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Solution
The fourth proportional to 768,006.80, 1,152,010.20 and 430,701.20 is: 646,051.80
Step by Step Solution
- Step 1: Write the proportion equation
768,006.80 : 1,152,010.20 = 430,701.20 : x - Step 2: Convert to fraction form
768,006.80/1,152,010.20 = 430,701.20/x - Step 3: Cross multiply
768,006.80x = 1,152,010.20 × 430,701.20 - Step 4: Simplify right side
768,006.80x = 496,172,175,552.24 - Step 5: Solve for x
x = 496,172,175,552.24/768,006.80 - Step 6: Final answer
x = 646,051.80
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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.