Finding the Fourth Proportional to 768,681.80, 1,153,022.70 and 436,905.80
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Solution
The fourth proportional to 768,681.80, 1,153,022.70 and 436,905.80 is: 655,358.70
Step by Step Solution
- Step 1: Write the proportion equation
768,681.80 : 1,153,022.70 = 436,905.80 : x - Step 2: Convert to fraction form
768,681.80/1,153,022.70 = 436,905.80/x - Step 3: Cross multiply
768,681.80x = 1,153,022.70 × 436,905.80 - Step 4: Simplify right side
768,681.80x = 503,762,305,161.66 - Step 5: Solve for x
x = 503,762,305,161.66/768,681.80 - Step 6: Final answer
x = 655,358.70
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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.