Finding the Fourth Proportional to 842,392.12, 1,161,832.24 and 636,348.12
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Solution
The fourth proportional to 842,392.12, 1,161,832.24 and 636,348.12 is: 877,655.13
Step by Step Solution
- Step 1: Write the proportion equation
842,392.12 : 1,161,832.24 = 636,348.12 : x - Step 2: Convert to fraction form
842,392.12/1,161,832.24 = 636,348.12/x - Step 3: Cross multiply
842,392.12x = 1,161,832.24 × 636,348.12 - Step 4: Simplify right side
842,392.12x = 739,329,761,679.39 - Step 5: Solve for x
x = 739,329,761,679.39/842,392.12 - Step 6: Final answer
x = 877,655.13
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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.