Finding the Fourth Proportional to 723,707,907.78, 1,086,021,010.62 and 309,187,852.05
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Solution
The fourth proportional to 723,707,907.78, 1,086,021,010.62 and 309,187,852.05 is: 463,977,939.09
Step by Step Solution
- Step 1: Write the proportion equation
723,707,907.78 : 1,086,021,010.62 = 309,187,852.05 : x - Step 2: Convert to fraction form
723,707,907.78/1,086,021,010.62 = 309,187,852.05/x - Step 3: Cross multiply
723,707,907.78x = 1,086,021,010.62 × 309,187,852.05 - Step 4: Simplify right side
723,707,907.78x = 335,784,503,554,768,000 - Step 5: Solve for x
x = 335,784,503,554,768,000/723,707,907.78 - Step 6: Final answer
x = 463,977,939.09
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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.