Finding the Fourth Proportional to 393,660,801.60, 590,491,202.40 and 291,624,129.60
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Solution
The fourth proportional to 393,660,801.60, 590,491,202.40 and 291,624,129.60 is: 437,436,194.40
Step by Step Solution
- Step 1: Write the proportion equation
393,660,801.60 : 590,491,202.40 = 291,624,129.60 : x - Step 2: Convert to fraction form
393,660,801.60/590,491,202.40 = 291,624,129.60/x - Step 3: Cross multiply
393,660,801.60x = 590,491,202.40 × 291,624,129.60 - Step 4: Simplify right side
393,660,801.60x = 172,201,482,936,357,440 - Step 5: Solve for x
x = 172,201,482,936,357,440/393,660,801.60 - Step 6: Final answer
x = 437,436,194.40
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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.