Finding the Fourth Proportional to 1,645,233.12, 2,270,678.40 and 1,000,855.44
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Solution
The fourth proportional to 1,645,233.12, 2,270,678.40 and 1,000,855.44 is: 1,381,336.66
Step by Step Solution
- Step 1: Write the proportion equation
1,645,233.12 : 2,270,678.40 = 1,000,855.44 : x - Step 2: Convert to fraction form
1,645,233.12/2,270,678.40 = 1,000,855.44/x - Step 3: Cross multiply
1,645,233.12x = 2,270,678.40 × 1,000,855.44 - Step 4: Simplify right side
1,645,233.12x = 2,272,620,829,130.50 - Step 5: Solve for x
x = 2,272,620,829,130.50/1,645,233.12 - Step 6: Final answer
x = 1,381,336.66
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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.