Finding the Fourth Proportional to 420,107.20, 630,160.80 and 420,107.20
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Solution
The fourth proportional to 420,107.20, 630,160.80 and 420,107.20 is: 630,160.80
Step by Step Solution
- Step 1: Write the proportion equation
420,107.20 : 630,160.80 = 420,107.20 : x - Step 2: Convert to fraction form
420,107.20/630,160.80 = 420,107.20/x - Step 3: Cross multiply
420,107.20x = 630,160.80 × 420,107.20 - Step 4: Simplify right side
420,107.20x = 264,735,089,237.76 - Step 5: Solve for x
x = 264,735,089,237.76/420,107.20 - Step 6: Final answer
x = 630,160.80
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1.5x scale
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.