Finding the Fourth Proportional to 1,272,000.80, 1,906,815.36 and 429,963.68
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Solution
The fourth proportional to 1,272,000.80, 1,906,815.36 and 429,963.68 is: 644,544.68
Step by Step Solution
- Step 1: Write the proportion equation
1,272,000.80 : 1,906,815.36 = 429,963.68 : x - Step 2: Convert to fraction form
1,272,000.80/1,906,815.36 = 429,963.68/x - Step 3: Cross multiply
1,272,000.80x = 1,906,815.36 × 429,963.68 - Step 4: Simplify right side
1,272,000.80x = 819,861,349,266.13 - Step 5: Solve for x
x = 819,861,349,266.13/1,272,000.80 - Step 6: Final answer
x = 644,544.68
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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.