Finding the Fourth Proportional to 1,212,199.20, 1,817,132.40 and 942,177.60
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Solution
The fourth proportional to 1,212,199.20, 1,817,132.40 and 942,177.60 is: 1,412,359.82
Step by Step Solution
- Step 1: Write the proportion equation
1,212,199.20 : 1,817,132.40 = 942,177.60 : x - Step 2: Convert to fraction form
1,212,199.20/1,817,132.40 = 942,177.60/x - Step 3: Cross multiply
1,212,199.20x = 1,817,132.40 × 942,177.60 - Step 4: Simplify right side
1,212,199.20x = 1,712,061,443,514.24 - Step 5: Solve for x
x = 1,712,061,443,514.24/1,212,199.20 - Step 6: Final answer
x = 1,412,359.82
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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.