Finding the Fourth Proportional to 716,780.12, 989,159.36 and 394,501.66
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Solution
The fourth proportional to 716,780.12, 989,159.36 and 394,501.66 is: 544,413.83
Step by Step Solution
- Step 1: Write the proportion equation
716,780.12 : 989,159.36 = 394,501.66 : x - Step 2: Convert to fraction form
716,780.12/989,159.36 = 394,501.66/x - Step 3: Cross multiply
716,780.12x = 989,159.36 × 394,501.66 - Step 4: Simplify right side
716,780.12x = 390,225,005,079.13 - Step 5: Solve for x
x = 390,225,005,079.13/716,780.12 - Step 6: Final answer
x = 544,413.83
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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.