Finding the Fourth Proportional to 1,219,120.61, 1,828,768.57 and 420,390.63
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Solution
The fourth proportional to 1,219,120.61, 1,828,768.57 and 420,390.63 is: 630,616.17
Step by Step Solution
- Step 1: Write the proportion equation
1,219,120.61 : 1,828,768.57 = 420,390.63 : x - Step 2: Convert to fraction form
1,219,120.61/1,828,768.57 = 420,390.63/x - Step 3: Cross multiply
1,219,120.61x = 1,828,768.57 × 420,390.63 - Step 4: Simplify right side
1,219,120.61x = 768,797,170,215.52 - Step 5: Solve for x
x = 768,797,170,215.52/1,219,120.61 - Step 6: Final answer
x = 630,616.17
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.