Finding the Fourth Proportional to 420,378.24, 630,832.32 and 280,237.44
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Solution
The fourth proportional to 420,378.24, 630,832.32 and 280,237.44 is: 420,532.79
Step by Step Solution
- Step 1: Write the proportion equation
420,378.24 : 630,832.32 = 280,237.44 : x - Step 2: Convert to fraction form
420,378.24/630,832.32 = 280,237.44/x - Step 3: Cross multiply
420,378.24x = 630,832.32 × 280,237.44 - Step 4: Simplify right side
420,378.24x = 176,782,834,426.06 - Step 5: Solve for x
x = 176,782,834,426.06/420,378.24 - Step 6: Final answer
x = 420,532.79
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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.