Finding the Fourth Proportional to 378,917.84, 522,947.40 and 283,260.08
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Solution
The fourth proportional to 378,917.84, 522,947.40 and 283,260.08 is: 390,929.40
Step by Step Solution
- Step 1: Write the proportion equation
378,917.84 : 522,947.40 = 283,260.08 : x - Step 2: Convert to fraction form
378,917.84/522,947.40 = 283,260.08/x - Step 3: Cross multiply
378,917.84x = 522,947.40 × 283,260.08 - Step 4: Simplify right side
378,917.84x = 148,130,122,359.79 - Step 5: Solve for x
x = 148,130,122,359.79/378,917.84 - Step 6: Final answer
x = 390,929.40
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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.