Finding the Fourth Proportional to 839,808,701.70, 1,259,713,052.55 and 664,456,791.30
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Solution
The fourth proportional to 839,808,701.70, 1,259,713,052.55 and 664,456,791.30 is: 996,685,186.95
Step by Step Solution
- Step 1: Write the proportion equation
839,808,701.70 : 1,259,713,052.55 = 664,456,791.30 : x - Step 2: Convert to fraction form
839,808,701.70/1,259,713,052.55 = 664,456,791.30/x - Step 3: Cross multiply
839,808,701.70x = 1,259,713,052.55 × 664,456,791.30 - Step 4: Simplify right side
839,808,701.70x = 837,024,892,856,101,248 - Step 5: Solve for x
x = 837,024,892,856,101,248/839,808,701.70 - Step 6: Final answer
x = 996,685,186.95
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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.