Finding the Fourth Proportional to 1,314,664,887.60, 1,971,997,331.40 and 769,125,610.80
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Solution
The fourth proportional to 1,314,664,887.60, 1,971,997,331.40 and 769,125,610.80 is: 1,153,688,416.20
Step by Step Solution
- Step 1: Write the proportion equation
1,314,664,887.60 : 1,971,997,331.40 = 769,125,610.80 : x - Step 2: Convert to fraction form
1,314,664,887.60/1,971,997,331.40 = 769,125,610.80/x - Step 3: Cross multiply
1,314,664,887.60x = 1,971,997,331.40 × 769,125,610.80 - Step 4: Simplify right side
1,314,664,887.60x = 1,516,713,652,008,995,072 - Step 5: Solve for x
x = 1,516,713,652,008,995,072/1,314,664,887.60 - Step 6: Final answer
x = 1,153,688,416.20
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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.