Finding the Fourth Proportional to 628,921,367.80, 943,382,051.70 and 192,221,207.80
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Solution
The fourth proportional to 628,921,367.80, 943,382,051.70 and 192,221,207.80 is: 288,331,811.70
Step by Step Solution
- Step 1: Write the proportion equation
628,921,367.80 : 943,382,051.70 = 192,221,207.80 : x - Step 2: Convert to fraction form
628,921,367.80/943,382,051.70 = 192,221,207.80/x - Step 3: Cross multiply
628,921,367.80x = 943,382,051.70 × 192,221,207.80 - Step 4: Simplify right side
628,921,367.80x = 181,338,037,394,616,064 - Step 5: Solve for x
x = 181,338,037,394,616,064/628,921,367.80 - Step 6: Final answer
x = 288,331,811.70
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Similar ratio
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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.