Finding the Fourth Proportional to 722,339,909.53, 996,834,176.99 and 392,315,048.53
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Solution
The fourth proportional to 722,339,909.53, 996,834,176.99 and 392,315,048.53 is: 541,397,537.87
Step by Step Solution
- Step 1: Write the proportion equation
722,339,909.53 : 996,834,176.99 = 392,315,048.53 : x - Step 2: Convert to fraction form
722,339,909.53/996,834,176.99 = 392,315,048.53/x - Step 3: Cross multiply
722,339,909.53x = 996,834,176.99 × 392,315,048.53 - Step 4: Simplify right side
722,339,909.53x = 391,073,048,522,194,432 - Step 5: Solve for x
x = 391,073,048,522,194,432/722,339,909.53 - Step 6: Final answer
x = 541,397,537.87
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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.