Finding the Fourth Proportional to 393,939,423.40, 590,909,135.10 and 121,393,733.80
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Solution
The fourth proportional to 393,939,423.40, 590,909,135.10 and 121,393,733.80 is: 182,090,600.70
Step by Step Solution
- Step 1: Write the proportion equation
393,939,423.40 : 590,909,135.10 = 121,393,733.80 : x - Step 2: Convert to fraction form
393,939,423.40/590,909,135.10 = 121,393,733.80/x - Step 3: Cross multiply
393,939,423.40x = 590,909,135.10 × 121,393,733.80 - Step 4: Simplify right side
393,939,423.40x = 71,732,666,246,317,640 - Step 5: Solve for x
x = 71,732,666,246,317,640/393,939,423.40 - Step 6: Final answer
x = 182,090,600.70
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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.