Finding the Fourth Proportional to 378,916.84, 522,946.02 and 283,259.08
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Solution
The fourth proportional to 378,916.84, 522,946.02 and 283,259.08 is: 390,928.02
Step by Step Solution
- Step 1: Write the proportion equation
378,916.84 : 522,946.02 = 283,259.08 : x - Step 2: Convert to fraction form
378,916.84/522,946.02 = 283,259.08/x - Step 3: Cross multiply
378,916.84x = 522,946.02 × 283,259.08 - Step 4: Simplify right side
378,916.84x = 148,129,208,514.86 - Step 5: Solve for x
x = 148,129,208,514.86/378,916.84 - Step 6: Final answer
x = 390,928.02
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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.