Finding the Fourth Proportional to 818,929.75, 1,129,521.50 and 542,788.20
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Solution
The fourth proportional to 818,929.75, 1,129,521.50 and 542,788.20 is: 748,649.00
Step by Step Solution
- Step 1: Write the proportion equation
818,929.75 : 1,129,521.50 = 542,788.20 : x - Step 2: Convert to fraction form
818,929.75/1,129,521.50 = 542,788.20/x - Step 3: Cross multiply
818,929.75x = 1,129,521.50 × 542,788.20 - Step 4: Simplify right side
818,929.75x = 613,090,941,846.30 - Step 5: Solve for x
x = 613,090,941,846.30/818,929.75 - Step 6: Final answer
x = 748,649.00
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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.