Finding the Fourth Proportional to 420,768,704.80, 631,153,057.20 and 237,102,695.20
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Solution
The fourth proportional to 420,768,704.80, 631,153,057.20 and 237,102,695.20 is: 355,654,042.80
Step by Step Solution
- Step 1: Write the proportion equation
420,768,704.80 : 631,153,057.20 = 237,102,695.20 : x - Step 2: Convert to fraction form
420,768,704.80/631,153,057.20 = 237,102,695.20/x - Step 3: Cross multiply
420,768,704.80x = 631,153,057.20 × 237,102,695.20 - Step 4: Simplify right side
420,768,704.80x = 149,648,090,945,839,776 - Step 5: Solve for x
x = 149,648,090,945,839,776/420,768,704.80 - Step 6: Final answer
x = 355,654,042.80
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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.