Finding the Fourth Proportional to 1,186,128.70, 1,779,423.45 and 512,208.70
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Solution
The fourth proportional to 1,186,128.70, 1,779,423.45 and 512,208.70 is: 768,412.54
Step by Step Solution
- Step 1: Write the proportion equation
1,186,128.70 : 1,779,423.45 = 512,208.70 : x - Step 2: Convert to fraction form
1,186,128.70/1,779,423.45 = 512,208.70/x - Step 3: Cross multiply
1,186,128.70x = 1,779,423.45 × 512,208.70 - Step 4: Simplify right side
1,186,128.70x = 911,436,172,074.02 - Step 5: Solve for x
x = 911,436,172,074.02/1,186,128.70 - Step 6: Final answer
x = 768,412.54
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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.