Finding the Fourth Proportional to 379,044,781.28, 523,108,865.97 and 209,495,371.62
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Solution
The fourth proportional to 379,044,781.28, 523,108,865.97 and 209,495,371.62 is: 289,118,573.02
Step by Step Solution
- Step 1: Write the proportion equation
379,044,781.28 : 523,108,865.97 = 209,495,371.62 : x - Step 2: Convert to fraction form
379,044,781.28/523,108,865.97 = 209,495,371.62/x - Step 3: Cross multiply
379,044,781.28x = 523,108,865.97 × 209,495,371.62 - Step 4: Simplify right side
379,044,781.28x = 109,588,886,274,101,936 - Step 5: Solve for x
x = 109,588,886,274,101,936/379,044,781.28 - Step 6: Final answer
x = 289,118,573.02
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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.