Finding the Fourth Proportional to 472,277.20, 708,415.80 and 425,621.20
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Solution
The fourth proportional to 472,277.20, 708,415.80 and 425,621.20 is: 638,431.80
Step by Step Solution
- Step 1: Write the proportion equation
472,277.20 : 708,415.80 = 425,621.20 : x - Step 2: Convert to fraction form
472,277.20/708,415.80 = 425,621.20/x - Step 3: Cross multiply
472,277.20x = 708,415.80 × 425,621.20 - Step 4: Simplify right side
472,277.20x = 301,516,782,894.96 - Step 5: Solve for x
x = 301,516,782,894.96/472,277.20 - Step 6: Final answer
x = 638,431.80
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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.