Finding the Fourth Proportional to 839,809,674.30, 1,259,714,511.45 and 576,781,808.70
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Solution
The fourth proportional to 839,809,674.30, 1,259,714,511.45 and 576,781,808.70 is: 865,172,713.05
Step by Step Solution
- Step 1: Write the proportion equation
839,809,674.30 : 1,259,714,511.45 = 576,781,808.70 : x - Step 2: Convert to fraction form
839,809,674.30/1,259,714,511.45 = 576,781,808.70/x - Step 3: Cross multiply
839,809,674.30x = 1,259,714,511.45 × 576,781,808.70 - Step 4: Simplify right side
839,809,674.30x = 726,580,414,359,767,936 - Step 5: Solve for x
x = 726,580,414,359,767,936/839,809,674.30 - Step 6: Final answer
x = 865,172,713.05
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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.