Finding the Fourth Proportional to 644,454,249.20, 889,191,727.25 and 376,378,054.95
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Solution
The fourth proportional to 644,454,249.20, 889,191,727.25 and 376,378,054.95 is: 519,311,111.99
Step by Step Solution
- Step 1: Write the proportion equation
644,454,249.20 : 889,191,727.25 = 376,378,054.95 : x - Step 2: Convert to fraction form
644,454,249.20/889,191,727.25 = 376,378,054.95/x - Step 3: Cross multiply
644,454,249.20x = 889,191,727.25 × 376,378,054.95 - Step 4: Simplify right side
644,454,249.20x = 334,672,252,778,104,000 - Step 5: Solve for x
x = 334,672,252,778,104,000/644,454,249.20 - Step 6: Final answer
x = 519,311,111.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.