Finding the Fourth Proportional to 554,562.05, 765,331.08 and 312,756.40
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Solution
The fourth proportional to 554,562.05, 765,331.08 and 312,756.40 is: 431,623.82
Step by Step Solution
- Step 1: Write the proportion equation
554,562.05 : 765,331.08 = 312,756.40 : x - Step 2: Convert to fraction form
554,562.05/765,331.08 = 312,756.40/x - Step 3: Cross multiply
554,562.05x = 765,331.08 × 312,756.40 - Step 4: Simplify right side
554,562.05x = 239,362,187,998.48 - Step 5: Solve for x
x = 239,362,187,998.48/554,562.05 - Step 6: Final answer
x = 431,623.82
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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.