Finding the Fourth Proportional to 635,346,373.71, 876,506,023.09 and 396,777,381.84
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Solution
The fourth proportional to 635,346,373.71, 876,506,023.09 and 396,777,381.84 is: 547,382,938.50
Step by Step Solution
- Step 1: Write the proportion equation
635,346,373.71 : 876,506,023.09 = 396,777,381.84 : x - Step 2: Convert to fraction form
635,346,373.71/876,506,023.09 = 396,777,381.84/x - Step 3: Cross multiply
635,346,373.71x = 876,506,023.09 × 396,777,381.84 - Step 4: Simplify right side
635,346,373.71x = 347,777,765,008,640,768 - Step 5: Solve for x
x = 347,777,765,008,640,768/635,346,373.71 - Step 6: Final answer
x = 547,382,938.50
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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.