Finding the Fourth Proportional to 1,269,596,212.80, 1,904,394,319.20 and 349,614,542.40
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Solution
The fourth proportional to 1,269,596,212.80, 1,904,394,319.20 and 349,614,542.40 is: 524,421,813.60
Step by Step Solution
- Step 1: Write the proportion equation
1,269,596,212.80 : 1,904,394,319.20 = 349,614,542.40 : x - Step 2: Convert to fraction form
1,269,596,212.80/1,904,394,319.20 = 349,614,542.40/x - Step 3: Cross multiply
1,269,596,212.80x = 1,904,394,319.20 × 349,614,542.40 - Step 4: Simplify right side
1,269,596,212.80x = 665,803,948,456,267,520 - Step 5: Solve for x
x = 665,803,948,456,267,520/1,269,596,212.80 - Step 6: Final answer
x = 524,421,813.60
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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.