Finding the Fourth Proportional to 679,581.05, 937,731.59 and 421,363.81
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Solution
The fourth proportional to 679,581.05, 937,731.59 and 421,363.81 is: 581,426.09
Step by Step Solution
- Step 1: Write the proportion equation
679,581.05 : 937,731.59 = 421,363.81 : x - Step 2: Convert to fraction form
679,581.05/937,731.59 = 421,363.81/x - Step 3: Cross multiply
679,581.05x = 937,731.59 × 421,363.81 - Step 4: Simplify right side
679,581.05x = 395,126,155,519.76 - Step 5: Solve for x
x = 395,126,155,519.76/679,581.05 - Step 6: Final answer
x = 581,426.09
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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.