Finding the Fourth Proportional to 420,765,774.26, 580,629,098.50 and 242,120,828.92
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Solution
The fourth proportional to 420,765,774.26, 580,629,098.50 and 242,120,828.92 is: 334,110,821.80
Step by Step Solution
- Step 1: Write the proportion equation
420,765,774.26 : 580,629,098.50 = 242,120,828.92 : x - Step 2: Convert to fraction form
420,765,774.26/580,629,098.50 = 242,120,828.92/x - Step 3: Cross multiply
420,765,774.26x = 580,629,098.50 × 242,120,828.92 - Step 4: Simplify right side
420,765,774.26x = 140,582,398,623,892,320 - Step 5: Solve for x
x = 140,582,398,623,892,320/420,765,774.26 - Step 6: Final answer
x = 334,110,821.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.