Finding the Fourth Proportional to 1,392,750.72, 1,921,288.55 and 909,598.68
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Solution
The fourth proportional to 1,392,750.72, 1,921,288.55 and 909,598.68 is: 1,254,784.15
Step by Step Solution
- Step 1: Write the proportion equation
1,392,750.72 : 1,921,288.55 = 909,598.68 : x - Step 2: Convert to fraction form
1,392,750.72/1,921,288.55 = 909,598.68/x - Step 3: Cross multiply
1,392,750.72x = 1,921,288.55 × 909,598.68 - Step 4: Simplify right side
1,392,750.72x = 1,747,601,524,431.12 - Step 5: Solve for x
x = 1,747,601,524,431.12/1,392,750.72 - Step 6: Final answer
x = 1,254,784.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.