Finding the Fourth Proportional to 515,863.08, 710,719.95 and 399,175.29
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Solution
The fourth proportional to 515,863.08, 710,719.95 and 399,175.29 is: 549,955.70
Step by Step Solution
- Step 1: Write the proportion equation
515,863.08 : 710,719.95 = 399,175.29 : x - Step 2: Convert to fraction form
515,863.08/710,719.95 = 399,175.29/x - Step 3: Cross multiply
515,863.08x = 710,719.95 × 399,175.29 - Step 4: Simplify right side
515,863.08x = 283,701,843,646.94 - Step 5: Solve for x
x = 283,701,843,646.94/515,863.08 - Step 6: Final answer
x = 549,955.70
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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.