Finding the Fourth Proportional to 585,689.80, 878,534.70 and 142,457.80
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Solution
The fourth proportional to 585,689.80, 878,534.70 and 142,457.80 is: 213,686.70
Step by Step Solution
- Step 1: Write the proportion equation
585,689.80 : 878,534.70 = 142,457.80 : x - Step 2: Convert to fraction form
585,689.80/878,534.70 = 142,457.80/x - Step 3: Cross multiply
585,689.80x = 878,534.70 × 142,457.80 - Step 4: Simplify right side
585,689.80x = 125,154,120,585.66 - Step 5: Solve for x
x = 125,154,120,585.66/585,689.80 - Step 6: Final answer
x = 213,686.70
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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.