Finding the Fourth Proportional to 629,857,490.40, 944,786,235.60 and 626,031,115.20
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Solution
The fourth proportional to 629,857,490.40, 944,786,235.60 and 626,031,115.20 is: 939,046,672.80
Step by Step Solution
- Step 1: Write the proportion equation
629,857,490.40 : 944,786,235.60 = 626,031,115.20 : x - Step 2: Convert to fraction form
629,857,490.40/944,786,235.60 = 626,031,115.20/x - Step 3: Cross multiply
629,857,490.40x = 944,786,235.60 × 626,031,115.20 - Step 4: Simplify right side
629,857,490.40x = 591,465,580,698,278,016 - Step 5: Solve for x
x = 591,465,580,698,278,016/629,857,490.40 - Step 6: Final answer
x = 939,046,672.80
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Double scale
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Similar ratio
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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.