Finding the Fourth Proportional to 579,823.80, 869,735.70 and 439,855.80
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Solution
The fourth proportional to 579,823.80, 869,735.70 and 439,855.80 is: 659,783.70
Step by Step Solution
- Step 1: Write the proportion equation
579,823.80 : 869,735.70 = 439,855.80 : x - Step 2: Convert to fraction form
579,823.80/869,735.70 = 439,855.80/x - Step 3: Cross multiply
579,823.80x = 869,735.70 × 439,855.80 - Step 4: Simplify right side
579,823.80x = 382,558,292,112.06 - Step 5: Solve for x
x = 382,558,292,112.06/579,823.80 - Step 6: Final answer
x = 659,783.70
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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.