Finding the Fourth Proportional to 3,478,217,872.80, 5,217,326,809.20 and 2,376,221,815.20
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Solution
The fourth proportional to 3,478,217,872.80, 5,217,326,809.20 and 2,376,221,815.20 is: 3,564,332,722.80
Step by Step Solution
- Step 1: Write the proportion equation
3,478,217,872.80 : 5,217,326,809.20 = 2,376,221,815.20 : x - Step 2: Convert to fraction form
3,478,217,872.80/5,217,326,809.20 = 2,376,221,815.20/x - Step 3: Cross multiply
3,478,217,872.80x = 5,217,326,809.20 × 2,376,221,815.20 - Step 4: Simplify right side
3,478,217,872.80x = 12,397,525,781,048,846,336 - Step 5: Solve for x
x = 12,397,525,781,048,846,336/3,478,217,872.80 - Step 6: Final answer
x = 3,564,332,722.80
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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.