Finding the Fourth Proportional to 943,490,966.20, 1,415,236,449.30 and 667,991,951.80
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Solution
The fourth proportional to 943,490,966.20, 1,415,236,449.30 and 667,991,951.80 is: 1,001,987,927.70
Step by Step Solution
- Step 1: Write the proportion equation
943,490,966.20 : 1,415,236,449.30 = 667,991,951.80 : x - Step 2: Convert to fraction form
943,490,966.20/1,415,236,449.30 = 667,991,951.80/x - Step 3: Cross multiply
943,490,966.20x = 1,415,236,449.30 × 667,991,951.80 - Step 4: Simplify right side
943,490,966.20x = 945,366,558,026,408,704 - Step 5: Solve for x
x = 945,366,558,026,408,704/943,490,966.20 - Step 6: Final answer
x = 1,001,987,927.70
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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.