Finding the Fourth Proportional to 842,839,950.26, 1,263,685,304.75 and 427,515,911.88
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Solution
The fourth proportional to 842,839,950.26, 1,263,685,304.75 and 427,515,911.88 is: 640,982,401.49
Step by Step Solution
- Step 1: Write the proportion equation
842,839,950.26 : 1,263,685,304.75 = 427,515,911.88 : x - Step 2: Convert to fraction form
842,839,950.26/1,263,685,304.75 = 427,515,911.88/x - Step 3: Cross multiply
842,839,950.26x = 1,263,685,304.75 × 427,515,911.88 - Step 4: Simplify right side
842,839,950.26x = 540,245,575,387,414,336 - Step 5: Solve for x
x = 540,245,575,387,414,336/842,839,950.26 - Step 6: Final answer
x = 640,982,401.49
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Double scale
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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.