Finding the Fourth Proportional to 943,490,962.70, 1,415,236,444.05 and 667,991,948.30
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Solution
The fourth proportional to 943,490,962.70, 1,415,236,444.05 and 667,991,948.30 is: 1,001,987,922.45
Step by Step Solution
- Step 1: Write the proportion equation
943,490,962.70 : 1,415,236,444.05 = 667,991,948.30 : x - Step 2: Convert to fraction form
943,490,962.70/1,415,236,444.05 = 667,991,948.30/x - Step 3: Cross multiply
943,490,962.70x = 1,415,236,444.05 × 667,991,948.30 - Step 4: Simplify right side
943,490,962.70x = 945,366,549,566,123,392 - Step 5: Solve for x
x = 945,366,549,566,123,392/943,490,962.70 - Step 6: Final answer
x = 1,001,987,922.45
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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.