Finding the Fourth Proportional to 629,873,315.80, 944,809,973.70 and 199,051,811.80
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Solution
The fourth proportional to 629,873,315.80, 944,809,973.70 and 199,051,811.80 is: 298,577,717.70
Step by Step Solution
- Step 1: Write the proportion equation
629,873,315.80 : 944,809,973.70 = 199,051,811.80 : x - Step 2: Convert to fraction form
629,873,315.80/944,809,973.70 = 199,051,811.80/x - Step 3: Cross multiply
629,873,315.80x = 944,809,973.70 × 199,051,811.80 - Step 4: Simplify right side
629,873,315.80x = 188,066,137,071,695,360 - Step 5: Solve for x
x = 188,066,137,071,695,360/629,873,315.80 - Step 6: Final answer
x = 298,577,717.70
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Double scale
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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.