Finding the Fourth Proportional to 1,677,122,209.80, 2,515,683,314.70 and 512,588,449.80
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Solution
The fourth proportional to 1,677,122,209.80, 2,515,683,314.70 and 512,588,449.80 is: 768,882,674.70
Step by Step Solution
- Step 1: Write the proportion equation
1,677,122,209.80 : 2,515,683,314.70 = 512,588,449.80 : x - Step 2: Convert to fraction form
1,677,122,209.80/2,515,683,314.70 = 512,588,449.80/x - Step 3: Cross multiply
1,677,122,209.80x = 2,515,683,314.70 × 512,588,449.80 - Step 4: Simplify right side
1,677,122,209.80x = 1,289,510,210,469,798,400 - Step 5: Solve for x
x = 1,289,510,210,469,798,400/1,677,122,209.80 - Step 6: Final answer
x = 768,882,674.70
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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.