Finding the Fourth Proportional to 943,488,139.20, 1,415,232,208.80 and 667,989,124.80
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Solution
The fourth proportional to 943,488,139.20, 1,415,232,208.80 and 667,989,124.80 is: 1,001,983,687.20
Step by Step Solution
- Step 1: Write the proportion equation
943,488,139.20 : 1,415,232,208.80 = 667,989,124.80 : x - Step 2: Convert to fraction form
943,488,139.20/1,415,232,208.80 = 667,989,124.80/x - Step 3: Cross multiply
943,488,139.20x = 1,415,232,208.80 × 667,989,124.80 - Step 4: Simplify right side
943,488,139.20x = 945,359,724,545,082,752 - Step 5: Solve for x
x = 945,359,724,545,082,752/943,488,139.20 - Step 6: Final answer
x = 1,001,983,687.20
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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.