Finding the Fourth Proportional to 579,281.80, 868,922.70 and 439,313.80
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Solution
The fourth proportional to 579,281.80, 868,922.70 and 439,313.80 is: 658,970.70
Step by Step Solution
- Step 1: Write the proportion equation
579,281.80 : 868,922.70 = 439,313.80 : x - Step 2: Convert to fraction form
579,281.80/868,922.70 = 439,313.80/x - Step 3: Cross multiply
579,281.80x = 868,922.70 × 439,313.80 - Step 4: Simplify right side
579,281.80x = 381,729,733,243.26 - Step 5: Solve for x
x = 381,729,733,243.26/579,281.80 - Step 6: Final answer
x = 658,970.70
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1.5x scale
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.