Finding the Fourth Proportional to 1,026,076,987.80, 1,539,115,481.70 and 299,089,416.60
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Solution
The fourth proportional to 1,026,076,987.80, 1,539,115,481.70 and 299,089,416.60 is: 448,634,124.90
Step by Step Solution
- Step 1: Write the proportion equation
1,026,076,987.80 : 1,539,115,481.70 = 299,089,416.60 : x - Step 2: Convert to fraction form
1,026,076,987.80/1,539,115,481.70 = 299,089,416.60/x - Step 3: Cross multiply
1,026,076,987.80x = 1,539,115,481.70 × 299,089,416.60 - Step 4: Simplify right side
1,026,076,987.80x = 460,333,151,501,681,024 - Step 5: Solve for x
x = 460,333,151,501,681,024/1,026,076,987.80 - Step 6: Final answer
x = 448,634,124.90
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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.