Finding the Fourth Proportional to 915,919.11, 1,264,402.35 and 610,504.56
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Solution
The fourth proportional to 915,919.11, 1,264,402.35 and 610,504.56 is: 842,785.56
Step by Step Solution
- Step 1: Write the proportion equation
915,919.11 : 1,264,402.35 = 610,504.56 : x - Step 2: Convert to fraction form
915,919.11/1,264,402.35 = 610,504.56/x - Step 3: Cross multiply
915,919.11x = 1,264,402.35 × 610,504.56 - Step 4: Simplify right side
915,919.11x = 771,923,400,349.72 - Step 5: Solve for x
x = 771,923,400,349.72/915,919.11 - Step 6: Final answer
x = 842,785.56
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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.