Finding the Fourth Proportional to 1,048,781,644.80, 1,573,172,467.20 and 272,363,596.80
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Solution
The fourth proportional to 1,048,781,644.80, 1,573,172,467.20 and 272,363,596.80 is: 408,545,395.20
Step by Step Solution
- Step 1: Write the proportion equation
1,048,781,644.80 : 1,573,172,467.20 = 272,363,596.80 : x - Step 2: Convert to fraction form
1,048,781,644.80/1,573,172,467.20 = 272,363,596.80/x - Step 3: Cross multiply
1,048,781,644.80x = 1,573,172,467.20 × 272,363,596.80 - Step 4: Simplify right side
1,048,781,644.80x = 428,474,911,553,322,048 - Step 5: Solve for x
x = 428,474,911,553,322,048/1,048,781,644.80 - Step 6: Final answer
x = 408,545,395.20
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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.