Finding the Fourth Proportional to 839,829,207.20, 1,259,743,810.80 and 788,810,871.20
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Solution
The fourth proportional to 839,829,207.20, 1,259,743,810.80 and 788,810,871.20 is: 1,183,216,306.80
Step by Step Solution
- Step 1: Write the proportion equation
839,829,207.20 : 1,259,743,810.80 = 788,810,871.20 : x - Step 2: Convert to fraction form
839,829,207.20/1,259,743,810.80 = 788,810,871.20/x - Step 3: Cross multiply
839,829,207.20x = 1,259,743,810.80 × 788,810,871.20 - Step 4: Simplify right side
839,829,207.20x = 993,699,612,885,955,968 - Step 5: Solve for x
x = 993,699,612,885,955,968/839,829,207.20 - Step 6: Final answer
x = 1,183,216,306.80
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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.