Finding the Fourth Proportional to 991,154,418.80, 1,486,731,628.20 and 829,911,282.80
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Solution
The fourth proportional to 991,154,418.80, 1,486,731,628.20 and 829,911,282.80 is: 1,244,866,924.20
Step by Step Solution
- Step 1: Write the proportion equation
991,154,418.80 : 1,486,731,628.20 = 829,911,282.80 : x - Step 2: Convert to fraction form
991,154,418.80/1,486,731,628.20 = 829,911,282.80/x - Step 3: Cross multiply
991,154,418.80x = 1,486,731,628.20 × 829,911,282.80 - Step 4: Simplify right side
991,154,418.80x = 1,233,855,352,738,794,496 - Step 5: Solve for x
x = 1,233,855,352,738,794,496/991,154,418.80 - Step 6: Final answer
x = 1,244,866,924.20
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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.