Finding the Fourth Proportional to 1,219,117.35, 1,828,763.68 and 420,387.37
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Solution
The fourth proportional to 1,219,117.35, 1,828,763.68 and 420,387.37 is: 630,611.28
Step by Step Solution
- Step 1: Write the proportion equation
1,219,117.35 : 1,828,763.68 = 420,387.37 : x - Step 2: Convert to fraction form
1,219,117.35/1,828,763.68 = 420,387.37/x - Step 3: Cross multiply
1,219,117.35x = 1,828,763.68 × 420,387.37 - Step 4: Simplify right side
1,219,117.35x = 768,789,148,163.84 - Step 5: Solve for x
x = 768,789,148,163.84/1,219,117.35 - Step 6: Final answer
x = 630,611.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.