Finding the Fourth Proportional to 631,206,603.23, 870,989,661.92 and 348,910,907.99
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Solution
The fourth proportional to 631,206,603.23, 870,989,661.92 and 348,910,907.99 is: 481,455,346.37
Step by Step Solution
- Step 1: Write the proportion equation
631,206,603.23 : 870,989,661.92 = 348,910,907.99 : x - Step 2: Convert to fraction form
631,206,603.23/870,989,661.92 = 348,910,907.99/x - Step 3: Cross multiply
631,206,603.23x = 870,989,661.92 × 348,910,907.99 - Step 4: Simplify right side
631,206,603.23x = 303,897,793,784,310,848 - Step 5: Solve for x
x = 303,897,793,784,310,848/631,206,603.23 - Step 6: Final answer
x = 481,455,346.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.