Finding the Fourth Proportional to 489,435,356.38, 675,437,106.54 and 274,891,808.95
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Solution
The fourth proportional to 489,435,356.38, 675,437,106.54 and 274,891,808.95 is: 379,359,859.55
Step by Step Solution
- Step 1: Write the proportion equation
489,435,356.38 : 675,437,106.54 = 274,891,808.95 : x - Step 2: Convert to fraction form
489,435,356.38/675,437,106.54 = 274,891,808.95/x - Step 3: Cross multiply
489,435,356.38x = 675,437,106.54 × 274,891,808.95 - Step 4: Simplify right side
489,435,356.38x = 185,672,128,050,923,776 - Step 5: Solve for x
x = 185,672,128,050,923,776/489,435,356.38 - Step 6: Final answer
x = 379,359,859.55
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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.