Finding the Fourth Proportional to 818,045.68, 1,128,889.56 and 478,571.44
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Solution
The fourth proportional to 818,045.68, 1,128,889.56 and 478,571.44 is: 660,420.70
Step by Step Solution
- Step 1: Write the proportion equation
818,045.68 : 1,128,889.56 = 478,571.44 : x - Step 2: Convert to fraction form
818,045.68/1,128,889.56 = 478,571.44/x - Step 3: Cross multiply
818,045.68x = 1,128,889.56 × 478,571.44 - Step 4: Simplify right side
818,045.68x = 540,254,302,330.17 - Step 5: Solve for x
x = 540,254,302,330.17/818,045.68 - Step 6: Final answer
x = 660,420.70
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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.