Finding the Fourth Proportional to 518,389.68, 715,655.26 and 363,816.60
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Solution
The fourth proportional to 518,389.68, 715,655.26 and 363,816.60 is: 502,261.66
Step by Step Solution
- Step 1: Write the proportion equation
518,389.68 : 715,655.26 = 363,816.60 : x - Step 2: Convert to fraction form
518,389.68/715,655.26 = 363,816.60/x - Step 3: Cross multiply
518,389.68x = 715,655.26 × 363,816.60 - Step 4: Simplify right side
518,389.68x = 260,367,263,465.32 - Step 5: Solve for x
x = 260,367,263,465.32/518,389.68 - Step 6: Final answer
x = 502,261.66
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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.