Finding the Fourth Proportional to 818,378.07, 1,129,396.79 and 455,802.03
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Solution
The fourth proportional to 818,378.07, 1,129,396.79 and 455,802.03 is: 629,026.32
Step by Step Solution
- Step 1: Write the proportion equation
818,378.07 : 1,129,396.79 = 455,802.03 : x - Step 2: Convert to fraction form
818,378.07/1,129,396.79 = 455,802.03/x - Step 3: Cross multiply
818,378.07x = 1,129,396.79 × 455,802.03 - Step 4: Simplify right side
818,378.07x = 514,781,349,557.48 - Step 5: Solve for x
x = 514,781,349,557.48/818,378.07 - Step 6: Final answer
x = 629,026.32
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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.