Finding the Fourth Proportional to 847,292.12, 1,169,261.74 and 465,318.90
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Solution
The fourth proportional to 847,292.12, 1,169,261.74 and 465,318.90 is: 642,139.32
Step by Step Solution
- Step 1: Write the proportion equation
847,292.12 : 1,169,261.74 = 465,318.90 : x - Step 2: Convert to fraction form
847,292.12/1,169,261.74 = 465,318.90/x - Step 3: Cross multiply
847,292.12x = 1,169,261.74 × 465,318.90 - Step 4: Simplify right side
847,292.12x = 544,079,578,495.98 - Step 5: Solve for x
x = 544,079,578,495.98/847,292.12 - Step 6: Final answer
x = 642,139.32
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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.