Finding the Fourth Proportional to 959,153.20, 1,438,418.35 and 319,285.09
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Solution
The fourth proportional to 959,153.20, 1,438,418.35 and 319,285.09 is: 478,823.96
Step by Step Solution
- Step 1: Write the proportion equation
959,153.20 : 1,438,418.35 = 319,285.09 : x - Step 2: Convert to fraction form
959,153.20/1,438,418.35 = 319,285.09/x - Step 3: Cross multiply
959,153.20x = 1,438,418.35 × 319,285.09 - Step 4: Simplify right side
959,153.20x = 459,265,534,534.53 - Step 5: Solve for x
x = 459,265,534,534.53/959,153.20 - Step 6: Final answer
x = 478,823.96
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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.