Finding the Fourth Proportional to 782,987.47, 1,080,565.05 and 438,933.91
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Solution
The fourth proportional to 782,987.47, 1,080,565.05 and 438,933.91 is: 605,752.53
Step by Step Solution
- Step 1: Write the proportion equation
782,987.47 : 1,080,565.05 = 438,933.91 : x - Step 2: Convert to fraction form
782,987.47/1,080,565.05 = 438,933.91/x - Step 3: Cross multiply
782,987.47x = 1,080,565.05 × 438,933.91 - Step 4: Simplify right side
782,987.47x = 474,296,642,405.85 - Step 5: Solve for x
x = 474,296,642,405.85/782,987.47 - Step 6: Final answer
x = 605,752.53
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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.