Finding the Fourth Proportional to 519,972.80, 778,792.80 and 426,660.80
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Solution
The fourth proportional to 519,972.80, 778,792.80 and 426,660.80 is: 639,034.12
Step by Step Solution
- Step 1: Write the proportion equation
519,972.80 : 778,792.80 = 426,660.80 : x - Step 2: Convert to fraction form
519,972.80/778,792.80 = 426,660.80/x - Step 3: Cross multiply
519,972.80x = 778,792.80 × 426,660.80 - Step 4: Simplify right side
519,972.80x = 332,280,359,082.24 - Step 5: Solve for x
x = 332,280,359,082.24/519,972.80 - Step 6: Final answer
x = 639,034.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.