Finding the Fourth Proportional to 478,911.91, 660,903.60 and 261,118.79
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Solution
The fourth proportional to 478,911.91, 660,903.60 and 261,118.79 is: 360,346.75
Step by Step Solution
- Step 1: Write the proportion equation
478,911.91 : 660,903.60 = 261,118.79 : x - Step 2: Convert to fraction form
478,911.91/660,903.60 = 261,118.79/x - Step 3: Cross multiply
478,911.91x = 660,903.60 × 261,118.79 - Step 4: Simplify right side
478,911.91x = 172,574,348,491.71 - Step 5: Solve for x
x = 172,574,348,491.71/478,911.91 - Step 6: Final answer
x = 360,346.75
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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.