Finding the Fourth Proportional to 905,958,749.12, 1,250,211,121.61 and 509,481,619.74
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Solution
The fourth proportional to 905,958,749.12, 1,250,211,121.61 and 509,481,619.74 is: 703,077,913.73
Step by Step Solution
- Step 1: Write the proportion equation
905,958,749.12 : 1,250,211,121.61 = 509,481,619.74 : x - Step 2: Convert to fraction form
905,958,749.12/1,250,211,121.61 = 509,481,619.74/x - Step 3: Cross multiply
905,958,749.12x = 1,250,211,121.61 × 509,481,619.74 - Step 4: Simplify right side
905,958,749.12x = 636,959,587,252,277,504 - Step 5: Solve for x
x = 636,959,587,252,277,504/905,958,749.12 - Step 6: Final answer
x = 703,077,913.73
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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.