Finding the Fourth Proportional to 651,467,997.80, 977,201,996.70 and 651,467,997.80
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Solution
The fourth proportional to 651,467,997.80, 977,201,996.70 and 651,467,997.80 is: 977,201,996.70
Step by Step Solution
- Step 1: Write the proportion equation
651,467,997.80 : 977,201,996.70 = 651,467,997.80 : x - Step 2: Convert to fraction form
651,467,997.80/977,201,996.70 = 651,467,997.80/x - Step 3: Cross multiply
651,467,997.80x = 977,201,996.70 × 651,467,997.80 - Step 4: Simplify right side
651,467,997.80x = 636,615,828,236,311,168 - Step 5: Solve for x
x = 636,615,828,236,311,168/651,467,997.80 - Step 6: Final answer
x = 977,201,996.70
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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.