Finding the Fourth Proportional to 639,865,379.25, 882,764,227.35 and 371,896,686.99
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Solution
The fourth proportional to 639,865,379.25, 882,764,227.35 and 371,896,686.99 is: 513,072,127.66
Step by Step Solution
- Step 1: Write the proportion equation
639,865,379.25 : 882,764,227.35 = 371,896,686.99 : x - Step 2: Convert to fraction form
639,865,379.25/882,764,227.35 = 371,896,686.99/x - Step 3: Cross multiply
639,865,379.25x = 882,764,227.35 × 371,896,686.99 - Step 4: Simplify right side
639,865,379.25x = 328,297,091,544,752,192 - Step 5: Solve for x
x = 328,297,091,544,752,192/639,865,379.25 - Step 6: Final answer
x = 513,072,127.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.