Finding the Fourth Proportional to 718,138.93, 991,031.48 and 395,854.40
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Solution
The fourth proportional to 718,138.93, 991,031.48 and 395,854.40 is: 546,278.94
Step by Step Solution
- Step 1: Write the proportion equation
718,138.93 : 991,031.48 = 395,854.40 : x - Step 2: Convert to fraction form
718,138.93/991,031.48 = 395,854.40/x - Step 3: Cross multiply
718,138.93x = 991,031.48 × 395,854.40 - Step 4: Simplify right side
718,138.93x = 392,304,173,881.23 - Step 5: Solve for x
x = 392,304,173,881.23/718,138.93 - Step 6: Final answer
x = 546,278.94
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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.