Finding the Fourth Proportional to 645,988.25, 891,455.08 and 359,508.26
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Solution
The fourth proportional to 645,988.25, 891,455.08 and 359,508.26 is: 496,116.55
Step by Step Solution
- Step 1: Write the proportion equation
645,988.25 : 891,455.08 = 359,508.26 : x - Step 2: Convert to fraction form
645,988.25/891,455.08 = 359,508.26/x - Step 3: Cross multiply
645,988.25x = 891,455.08 × 359,508.26 - Step 4: Simplify right side
645,988.25x = 320,485,463,780.19 - Step 5: Solve for x
x = 320,485,463,780.19/645,988.25 - Step 6: Final answer
x = 496,116.55
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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.