Finding the Fourth Proportional to 518,400.41, 715,395.80 and 288,972.26
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Solution
The fourth proportional to 518,400.41, 715,395.80 and 288,972.26 is: 398,783.52
Step by Step Solution
- Step 1: Write the proportion equation
518,400.41 : 715,395.80 = 288,972.26 : x - Step 2: Convert to fraction form
518,400.41/715,395.80 = 288,972.26/x - Step 3: Cross multiply
518,400.41x = 715,395.80 × 288,972.26 - Step 4: Simplify right side
518,400.41x = 206,729,539,323.23 - Step 5: Solve for x
x = 206,729,539,323.23/518,400.41 - Step 6: Final answer
x = 398,783.52
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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.