Finding the Fourth Proportional to 1,022,822,717.88, 1,411,879,196.08 and 670,421,418.68
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Solution
The fourth proportional to 1,022,822,717.88, 1,411,879,196.08 and 670,421,418.68 is: 925,433,153.85
Step by Step Solution
- Step 1: Write the proportion equation
1,022,822,717.88 : 1,411,879,196.08 = 670,421,418.68 : x - Step 2: Convert to fraction form
1,022,822,717.88/1,411,879,196.08 = 670,421,418.68/x - Step 3: Cross multiply
1,022,822,717.88x = 1,411,879,196.08 × 670,421,418.68 - Step 4: Simplify right side
1,022,822,717.88x = 946,554,053,640,731,392 - Step 5: Solve for x
x = 946,554,053,640,731,392/1,022,822,717.88 - Step 6: Final answer
x = 925,433,153.85
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Double scale
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1.5x scale
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.