Finding the Fourth Proportional to 777,555.12, 1,073,021.28 and 438,132.72
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Solution
The fourth proportional to 777,555.12, 1,073,021.28 and 438,132.72 is: 604,620.46
Step by Step Solution
- Step 1: Write the proportion equation
777,555.12 : 1,073,021.28 = 438,132.72 : x - Step 2: Convert to fraction form
777,555.12/1,073,021.28 = 438,132.72/x - Step 3: Cross multiply
777,555.12x = 1,073,021.28 × 438,132.72 - Step 4: Simplify right side
777,555.12x = 470,125,732,024.28 - Step 5: Solve for x
x = 470,125,732,024.28/777,555.12 - Step 6: Final answer
x = 604,620.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.