Finding the Fourth Proportional to 782,406,076.80, 1,173,609,115.20 and 723,283,593.60
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Solution
The fourth proportional to 782,406,076.80, 1,173,609,115.20 and 723,283,593.60 is: 1,084,925,390.40
Step by Step Solution
- Step 1: Write the proportion equation
782,406,076.80 : 1,173,609,115.20 = 723,283,593.60 : x - Step 2: Convert to fraction form
782,406,076.80/1,173,609,115.20 = 723,283,593.60/x - Step 3: Cross multiply
782,406,076.80x = 1,173,609,115.20 × 723,283,593.60 - Step 4: Simplify right side
782,406,076.80x = 848,852,218,323,572,480 - Step 5: Solve for x
x = 848,852,218,323,572,480/782,406,076.80 - Step 6: Final answer
x = 1,084,925,390.40
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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.