Finding the Fourth Proportional to 657,905.10, 986,857.65 and 258,413.10
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Solution
The fourth proportional to 657,905.10, 986,857.65 and 258,413.10 is: 387,619.65
Step by Step Solution
- Step 1: Write the proportion equation
657,905.10 : 986,857.65 = 258,413.10 : x - Step 2: Convert to fraction form
657,905.10/986,857.65 = 258,413.10/x - Step 3: Cross multiply
657,905.10x = 986,857.65 × 258,413.10 - Step 4: Simplify right side
657,905.10x = 255,016,944,595.22 - Step 5: Solve for x
x = 255,016,944,595.22/657,905.10 - Step 6: Final answer
x = 387,619.65
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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.