Finding the Fourth Proportional to 515,078.09, 772,829.72 and 278,141.75
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Solution
The fourth proportional to 515,078.09, 772,829.72 and 278,141.75 is: 417,327.42
Step by Step Solution
- Step 1: Write the proportion equation
515,078.09 : 772,829.72 = 278,141.75 : x - Step 2: Convert to fraction form
515,078.09/772,829.72 = 278,141.75/x - Step 3: Cross multiply
515,078.09x = 772,829.72 × 278,141.75 - Step 4: Simplify right side
515,078.09x = 214,956,210,772.81 - Step 5: Solve for x
x = 214,956,210,772.81/515,078.09 - Step 6: Final answer
x = 417,327.42
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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.