Finding the Fourth Proportional to 2,115,072,031.20, 3,172,608,046.80 and 2,054,605,855.20
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Solution
The fourth proportional to 2,115,072,031.20, 3,172,608,046.80 and 2,054,605,855.20 is: 3,081,908,782.80
Step by Step Solution
- Step 1: Write the proportion equation
2,115,072,031.20 : 3,172,608,046.80 = 2,054,605,855.20 : x - Step 2: Convert to fraction form
2,115,072,031.20/3,172,608,046.80 = 2,054,605,855.20/x - Step 3: Cross multiply
2,115,072,031.20x = 3,172,608,046.80 × 2,054,605,855.20 - Step 4: Simplify right side
2,115,072,031.20x = 6,518,459,069,209,916,416 - Step 5: Solve for x
x = 6,518,459,069,209,916,416/2,115,072,031.20 - Step 6: Final answer
x = 3,081,908,782.80
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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.