Finding the Fourth Proportional to 290,402,855.80, 435,604,283.70 and 263,528,999.80
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Solution
The fourth proportional to 290,402,855.80, 435,604,283.70 and 263,528,999.80 is: 395,293,499.70
Step by Step Solution
- Step 1: Write the proportion equation
290,402,855.80 : 435,604,283.70 = 263,528,999.80 : x - Step 2: Convert to fraction form
290,402,855.80/435,604,283.70 = 263,528,999.80/x - Step 3: Cross multiply
290,402,855.80x = 435,604,283.70 × 263,528,999.80 - Step 4: Simplify right side
290,402,855.80x = 114,794,361,192,056,448 - Step 5: Solve for x
x = 114,794,361,192,056,448/290,402,855.80 - Step 6: Final answer
x = 395,293,499.70
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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.